We used to have a Polaris RzR and loved going up there for the day. We only went during the week, so I can't tell you anything about crowds on the weekends, but the trails were very well taken care of and the staff was really nice. It has been a few years so I don't know if it's changed though. I would give it a try!
2006 TJ 4.0.........for sale
2004 WJ Laredo 4.7....mine
2000 WJ Limited 4.7...spare
2014 JK Sport...younger Son's
1989 YJ rust bucket...older Son's
1994 YJ w/Chevy 350....older Son's