I have stayed both on and off site many times. I have to say that if it is the whole family I prefer off-site (sorry) space is huge and DH and I get lots of privacy, after all I'm on vacation and not stressed all the time. I also love having a full kitchen as our eating schedule is always off and sometimes you just want a little something. My DS 5 and I are going in 3 weeks and staying onsite- I'm thrilled and since its just the two of us room is not an issue. Anyway we have stayed at the Vistana, Summer Bay and Orange Lake- all beautiful and lots for the kids to do on down days. In May we stayed off site and friends stayed at OKW every night we were home from the parks before them when leaving at the same time. Can't wait to be there soon !! 
