I, nor my wife 7 years my junior, were 55 but were able to talk with the managers and they in turn went to some of the members and we were allowed into a resort when we stayed a year in Apache Junction, Az. You might ask if you are close to there age limits.
Found out the older members were far more partiers than we were!
Just do a search and you will come up with a long list of places.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7