There has been no problem parking behind Bally's near the fenced off employee parking area. We will be here a total of 3 nights and have not been approached by security at all. There are other rigs here who were here when we arrived as well as semis that arrive nightly. The best entrance is heading west on Flamingo past the employment building on the south side of the street. The entrance is directly across from the Westin. It is not the cleanest and is a little loud when the windows are down but it is the best and closest boondocking site near the strip that we have found.