The movie starts off in Brown Valley, Wisconsin. However, at the beginning when they're showing different scenes from the town, we see a directional highway sign in one shot that clearly shows a "diamond" shaped state-highway sign, which are used by the state of Michigan (where the movie is filmed).
When Dean Ziegler first enters the hotel, he yells to the desk staff to stock the mini-bar in his room, which he says is 1019, yet he, Tim and Ronald are staying in Room 112. However, it is possible that at the time Ziegler may not have known that he was being moved to a different room. Ziegler could have also just been saying nonsense just to get attention.