Michelle,
I put on the DVD this weekend as well; haven't seen the film in a few years and wanted to a refresher to compare and contrast. The film is still a delight, except for that positively cringeworthy blackface number! (The stage show omits Lincoln and Washington's Birthdays entirely.)
The plot of the stage show deviates significantly from the film. I'm never in support of slavish recreation when adapting a film for the stage, but there are some things the film does right that the show gets so wrong. The biggest mistake is waiting too long to introduce the idea of the inn. In the film, Bing comes up with idea at the 12 minute mark of the 100 minute movie. In the stage show, Pinkham doesn't come up with "holiday inn" until the end of the first act- 90 minutes into the show!
The two different love triangles (Jim/Lila/Ted and Jim/Linda/Ted) are so much better defined in the film, as are the ambitions, hopes and dreams of the two women. In the film, Lila and Jim are engaged and moving to the farm, but she's been seeing Ted behind his back and planning a duo act with him. Ted and Lila are in love and she has no want or intention to ever go to the farm. Lila wants to go on the road with the double act. It's her joint idea with Ted and the manager. Lila has agency in the film. In the stage show the idea of the double act is thrust upon her and she is wishy washy with breaking off her engagement with Jim (and never declares any romantic interest in Ted). Take away a character's agency and there's nothing left!
Likewise, Linda of the film is a New York flower shop girl with big dreams of making it big in show business. She's got ambition and is willing to scheme a little to get what she wants. In the show, Linda is a Connecticut school teacher who has the shows at the holiday inn thrust upon her; Jim practically has to twist her wrist to get her to perform, whereas in the film she's hungry to shine in the spotlight. The women in the stage show have choices made for them. The women in the film know what they want.
Re: Linda's love life, in the film she is first engaged to Jim, and later is engaged to Ted. In fact, Jim wins Linda back on her wedding night to Ted no less! There is a really triangle going on here, and the tension is real when Jim must go to Hollywood to win back his girl. The stage show never explores a romance with Ted and Linda, making it all the more perplexing that Jim is so jealous and angry with her.
Marie: Don't be in such a hurry about that pretty little chippy in Frisco.
Tony: Eh, she's a no chip!