A reentry ban issued by the UK does not affect movement in or through the Republic of Ireland in a strict legal sense. Ireland is a different country and hence outside the UK's sovereignty. So whatever happens falls to the Garda Síochána to decide.
Having said that there's an open data sharing between the UK and the ROI (and by proxy the USA). And the ...
Taking things in reverse order:
Is it now mandatory to pre-clear at Dublin?
Yes, it is. All US-bound passengers must go through pre-clearance at Dublin. The plane then lands as a "US-Domestic" flight in the states, with you just stepping out into the terminal.
will I need to claim by luggage at Dublin and recheck it?
No, you won't, as long as it is ...
Irish Ferries operates a bus from Bus Áras. It's very infrequent but apparently it's in accordance with the ferry timetable.
Edit: the bus takes 15 minutes between Bus Áras and the Ferryport.
The 747 stops at Talbot Street, Talbot Place about 150m from the bus station. According to timetable it takes 30 minutes. Obviously traffic can change this.
Aer Lingus suggests to head for pre-clearance no later than 90 minutes before the flight. This could be a good initial indicator to be adjusted depending on experience. Quoting from their website:
After check-in, passengers on these flights should follow airport signage for the US pre-clearance facility. The entrance to the US pre-clearance facility is ...
If your itinerary is DUB-LHR-LAX, then that Dublin and Shannon have US Pre-Clearance facilities is pretty much irrelevant. Your DUB-LHR flight, while not technically domestic, is essentially similar since you shouldn't have to enter the UK during transit.
You will clear US Immigration and Customs at LAX. You should expect to get any required forms* from ...
Turkish Airlines has a web page detailing their transfer procedures. In your case:
International transfer passengers flight routes issued on single ticket continuing to a foreign destination with Turkish Airlines
Passengers disembark with only their cabin baggage and proceed directly to the boarding gates without any flight or passport procedures.
Those pages are well out of date.
There is a direct bus from Dublin Airport every hour to Dun Laoghaire. It will work out much quicker than using more than one or two modes of transport.
8 euro single (Online) / 9 euro single (Pay Driver)
14 euro return (Online) / 15 euro return (Pay Driver)
After quite some searching, the best I can provide is a link on gumtree which shows classified ads for soccer in Dublin.
Several of them are trying to form teams or need extra players, and I'm sure would be happy to have a visitor join in for a game!
Personal experience in Ireland (and generally with car hires, but not with Hertz Ireland) says: the credit card must be in the name of the driver and not be a prepaid one.
There's three options to possibly get around that:
Ask the company to take the money that would usually be only be
"reserved" on your credit card from your debit card and refund it
You have another option which will be priced midway between those two, but it will offer you much better security.
This is how I would do it:
Ticket 1: An "open jaw" ticket. You fly Chicago-Dublin; and then you fly from London-Chicago.
[This is not two oneway tickets. It is a single open jaw ticket. It will be priced as half way between the cost of a ...
I called Hertz Dublin. Very helpful information which contradicts their website FAQ's which seems to generic.
I can use a Visa Debit Card or a Credit Card in the drivers name when I collect the car. Not sure if this applies to all Hertz outlets or just to Dublin.
Otherwise I think the cheapest option, barring getting a credit card in my own name, would be ...
Temple Bar is generally considered the night life / pub / club centre of Dublin. There is a wide range of accommodation from hostels to quality hotels, and there are a vast number of pubs and clubs within crawling distance.
If you buy items at the Dublin Airport duty-free, ask the staff to place your items in a sealed bag. They should do this automatically for any liquid purchases. You will be allowed to take this bag through security, but it must remain sealed until you arrive at your destination.
All liquid, gel and paste purchases will be placed in a clear plastic Travel ...
It's a long time I haven't flown with them but I would be surprised if they would not. Their regular flight menu obviously includes alcoholic drinks and I could not find any mention of any restriction for short flights anywhere.
I can't see a reason why they would specifically exclude alcohol either. Unlike full-service airlines, who could welcome an excuse ...
Terminal 1 (Irish Ferries & Isle of Man Steam Packet Company) is the furthest out. I’ve walked it from Dublin City Centre, and it is possible, but it’s not a pleasant walk, nor a short one. Confusingly, Terminal 1 is also called “Dublin Ferryport”. It appears under this name on the Dublin Bus timetable and in rail timetables which include ferry services. ...
If you'd prefer to get a train, the cheapest option is generally a "Rail & Sail" ticket: http://www.stenaline.co.uk/ferry/rail-and-sail/
In fact, it's usually cheaper than paying for a car on the ferry (and that's excluding the cost of fuel to get from London to Holyhead).
As well as being cheaper, you also have the peace of mind that if there are any ...
Promoting a comment to an answer
If you're not in a huge rush, I'd suggest you skip flying, and take the train. Well, train + train + ferry. That way, you'll have the computer parts and monitor with you at all times, can keep an eye on them, can ensure that no baggage handlers throw them about it.
Booked a little bit in advance, it's actually not that ...
If your preferred option does not work out, you could always try Eurolines Coaches, which depart to many European Countries including Ireland from Victoria Coach Station, London.
Ferry bookings work in the same way as flight tickets these days, the actual fare depends on the date and time of the booking, and changes in time.
To check the fare that is of interest you need to go to the ferry company website, e.g. Stena Line, enter the dates, press continue booking, enter the number of passengers and the size of the car, and then you ...
Dun Laoghaire Harbour is a little to the South East of Dublin City Centre. The Airport is to the north.
The Dublin Airport Website has a great section on getting to/from the airport which you should have a look at. I don't believe there's anything listed there that'll take you direct, but it might be worth double checking!
The option that springs to mind ...
One way flights from the US are typically quite expensive whatever the destination, because using two oneway tickets together you can defeat restrictions imposed by the cheaper round trip tickets such as minimum stays or Saturday nights. Therefore twice a oneway fare will usually be at least as expensive as the cheapest restricted roundtrip ticket, although ...
There's a pretty good page about Getting to & from Dun Laoghaire, and from that, it looks like the bus is a viable option:
Dublin Airport is only 16 miles away. The airport is
serviced by buses (41, 41a, 41b, 41c) which will take you into the
city centre where you can transfer onto a bus to Dun Laoghaire. There
is also a service called AirCoach, ...
The answer is the same either way, for two reasons:
The UK and Ireland share a Common Travel Area, similar to but entirely separate from Schengen. If you arrive in either country, bound for the other, you clear immigration in the first country of arrival. In your case, you will clear immigration in Dublin, regardless of which airline you use or whether you ...
Thank you @JonathanReez for the website.
Consumer Prices in New York, NY are 28.27% higher than in Dublin
Consumer Prices Including Rent in New York, NY are 56.50% higher than
Rent Prices in New York, NY are 105.54% higher than in Dublin
Restaurant Prices in New York, NY are 19.80% higher than in Dublin
Groceries Prices ...