When Danny is in the dorm room speaking to his roommate Sam, there are two living room chairs across from each other and facing the bed. But when Herman walks into the room the living room chair nearest to the camera has disappeared and instead, an office desk chair placed in a different room location is now revealed.
The dude ranch is clearly a set on a sound stage.
One of the best elements of Girl Crazy, the stage musical on which this is based, was the brilliant lyrics of Ira Gershwin (i.e. rhyming "time" and "I'm"). But the closed captions in the version of this aired on TCM repeatedly get the words wrong.