Based on https://www.moroccanembassylondon.org.uk/en/viisa.html Morocco does not appear to have an overt subsistence requirement other than to provide:
A return ticket with confirmed reservation;
A hotel booking, or Introduction of a "Voucher";
Or attestation of invitation duly legalized, in case of family ...
There is no route to apply for a Visitor visa from within the UK. An application must be made while the applicant is outside the UK and to a post designated to accept such applications. You will have to return to India unless you can legally enter another jurisdiction and apply from there.
Source: V2.1 https://www.gov.uk/guidance/immigration-rules/...
That's generally not a good idea. Whether it's actually a real problem depends on your specific citizenships.
Best & safest rule in my experience is
Always enter and leave a country on the same passport
Keep in mind that the round trip contains 4 border interactions, not just 2. Leave X, enter Y, leave Y, enter X.
So if you are going from X to Y you ...
If your export certificate correctly lists the earlier laptop with serial number, then items on it will not be counted against any limits.
The new laptop will fall into the category of one duty-free laptop and can be brought in without any duty.
Moreover, it is very common to bring in two laptops (one personal and one company) while travelling from the US to ...
Immigration (Control of Entry through the Republic of Ireland) Order 1972
with the 1979, 1980, 1982, 1985, 2000 and 2014 amendments to the 1972 Order
which should reflect the present day (2020-11-16) text (I could find no consolidated version)
It should be assumed that there will soon be a new amendment, effective 2021, where the EU references will be ...