>>>"Are reservations still recommended or is paying at the boarding location the only option at this point?"<<<
Transit Museum "Nostalgia Trains" are by reservation only.
Call New York Transit Museum Events Line at 718-694-1867 to reserve.
All MOD Excursion Trips are now POB, Day of Trip.
BTW, MOD trips are excursions, Transit Museum Nostalgia Trains are
just that a Train of Vintage Cars that takes you from Departure to
a Destination and nearby attractions besides lunch and return.
8 > ) ~ Sparky