I'd suggest that you guys go to RM. Since you haven't been at Desire before, you should go with the known property. We are thinking about Pearl as we've been to RM a few times. We LOVE RM but thought we'd experience Pearl just to change it up. We're still deciding. Our concern are the early hiccups and when they get resolved.
For you guys, you won't be disappointed at RM. It is great. It's all the fun you described and then some. There is no pressure. You do whatever you want and no one cares. All people care about is having a good time and being friendly to one another.
The property is clean, well run and has great staff. Go for it and have a blast!