We just met a couple who run one in Des Moines. We started chatting at the pool at a resort in Cancun this week. Both military retirees--he works Homeland Security still.
I'd actually make a trip there to just stay at one of their 6 rooms and go to the sights in town--like the farmer's market, which is supposed to be great (my great uncle was a pig farmer in Iowa--bet they have some good pork there!)
I've been a member for a year but never used any properties yet.