Next time we do something like this, we will be more mindful of the lights in the parking lot. There was plenty of room for parking, and the parking lot was fairly level. We even observed a boat in the parking lot with a ladder at the back to get on and off the boat.
They had children, their camper was unhooked, and they were gone in their truck most of the time (I would not be visiting the casino or concert with kids, anyway, although I suppose some people might).
One family appeared to be 'camping,' rather than visiting the casino. There were more than 25 trailers and RVs on this Thursday evening many with the slides out, and some with generators running. We knew you could do this however, we were surprised at the number of RVs in the lot. We parked in the casino RV lot, which we had never done before.
