I think most know about the South Point's Hot Dog cart, that is near the Sports Book in the casino, that sells Vienna Beef dogs for $1.50. That is a good tip. But here is the better tip. There is a 2nd cart located in the tournament bowling alley that is much closer to the show floor. Make a right when you get to the lobby area outside of the show floor and walk towards the Equestrian Center. Before you get there, there will be a set of escalators on the left going up the bowling alley. The hot dog cart is near the lanes. It will save you from walking so much and there is never a long line.