I am planning to go from Penn station to Washington for a conference. I would need to take my rollerboard for that (conference for 6 days, I present and need to take quite some clothes this time)T. Unfortunately, only the trains that leave at 3:00 am and 7 am can check baggage. For me it is not possible to take the train at those time points. Since I read that Amtrak personnel is not that strict with the rules; how would you estimate their reaction if I take my rollerboard (that probably just exceeds the 28'inch - I think it is about 30-32 inches)?
(I will also carry a poster with me. For that I have not many concerns reading the earlier messages.)