On the contrary, your every move by train requires you to shell out.
Though most amateur travelers know they are supposed to tip red caps, Pullman porters and dining-car waiters, few realize the importance of slipping the diner steward a few bucks, five at least for a couple is usual if there are several meals.
Unless you have ridden with him before and he knows you give, you should hand him his as soon as you enter the diner for your first meal.
At a cost of a few dollars you will change your trip, especially a long one, from an experience in inferiority to one that's at least tolerable.
The non-tipper stands in line for a table, eats only what's on the menu (if still in stock) and gets the general pushing around he deserves.
But for the tall tipper, the steward turns the car inside out, whispers of steaks, mountain trout, and front-riding seats and tables from which the parsimonious will be barred.
The warning given all prospective voyagers in naïve old days, to beware of gamblers on trains, is no longer believed generally necessary. Human nature hasn't changed, but trains have.
As already pointed out, passengers in de luxe cars keep to their rooms, whereas those who mix more are in the cheaper coach trains and therefore probably not considered bait by the predatory.
But watch your luggage in stations, especially for the old switch racket, in which the operator substitutes a bag resembling yours, stuffed with old telephone books, for your own valuable belongings.