I would be landing in Newark Airport with an international flight on Friday at 8.00 AM, and am planning to get to Philadelphia Center City immediately after to attend a conference (hotel not yet booked, but will choose one in Philadelphia Center City).
I will have a suitcase with me and a small backpack. I wanted to take an Amtrak train from the airport to Philadelphia 30th Street Station, but there seem to be no available trains that allow checked baggage.
Are there any other options for traveling by train with a suitcase? Can I find buses (are suitcases allowed on buses?) between those two points? If so, where?