That is not exactly right about 5ers not being allowed in the owner's section. We have a 5er and stayed there. They DO have rules on age of RV's and something I have never seen anyplace before (and we have been to 160 or so RV parks) the age restrictions are different for moho's as the are for 5er's. In any case, see their website.
I would stay there or Moab Valley by first choice. Spanish Trail changed ownership about 5 years ago I think (thank God) and is fine as well. Only downside is that it is way south of town and Arches and Island In The Sky section of Canyonlands are north of Moab. We have been to Moab 5 or 6 times and love it.
Ruby's is fine and we will be there again this Fall.
Barbara-DW 55 years
Sadie-"Aussie" Terrier
06 Mobile Suites 32TK3
06 Chev 3500 4x4 Dmax
20 yrs PT RVing - 190 RV parks; some many times