Continuity mistake: When the general gets introduced to the Haynes sisters he buttons his sweater as if to look more presentable. But then when he is handed the bag by Emma shortly after, his sweater front is wide open.
Continuity mistake: During the train club car scene, in the booth next to the foursome (on the left side of the screen) the large menu card leaning against the window continually appears and disappears.
Continuity mistake: When the foursome first arrive at the inn, the general and his granddaughter walk in, both carrying firewood. The granddaughter's bundle suddenly changes shape where one piece of wood is sticking out, then everything is neatly together.
Continuity mistake: The view out the back of the barn door when it's first revealed does not match the same view, just minutes later, in the final shot of the film. (01:55:43 - 01:59:12)
Other mistake: Bing delivers a letter from the govt to Gen. Waverly who has applied for active duty. The outside of the envelope is blank with no address and has no stamp on it.
Answer: While initially not pleased their tickets had been given away, Wallace used his war injured arm to gain passage (a running gag in the movie) and once on the train it no longer mattered that they did not have tickets. Besides, they were very pretty girls that they already knew and liked.
OneHappyHusky