Originally Posted by
GoAmtrak
Absolutely, yes. I always upgrade on trains 66 and 67, since it usually has the wonderful 2-1 club seating in Business Class. Too bad the AGR upgrades can't be applied when the ticket office and ClubAcela are closed; the upgrade does need to be obtained in advance. You could hypothetically purchase an upgrade from the conductor, but that's a huge roll of the dice in terms of availability.
It depends on who's staffing the desk at the front of the waiting area. You could always try to figure out which track arriving passengers are coming from and just make your way down there (via the middle level under the big status board, if necessary). There usually won't be anyone to stop you, and the train doors remain open for the duration of the layover.
Just boarded 66 and it does in fact have the good seats. When I arrived at NYP, they had already taken 66 off of the arrivals board and had yet to post it on the departures board. So I simply asked the woman at the desk what track 66 had come in on. She checked her notes and responded, "13, but it's not loading yet. C'mon in and have a seat." I answered, "no thank you," and proceeded down to the train. Thanks again for the input.