Mr. Moseby is at the front desk by the waterfall when talking to London, but right after, as Esteban is reading the telegram, he's coming out from the other side of the lobby.
When Esteban is reading the telegram, as he says, "The oil my uncle struck was from an underground pipeline," you can see Mr. Moseby and the extras waiting in the background for their cue.
At the end, when Bob address the audience, he throws his crown into the audience. In the next scene, it's on his head
Maddie is picked up by the FBI, and would presumably be taken back to headquarters immediately. However when London gets the phone call, Maddie and the G-Man are both just standing there listening.
After the Tipton lobby is back to normal, London claps before she walks away but the sound of her clapping is not there.