Thanks for all the info, it is helpful. The biggest problem is there are just so many variables it's hard to figure them all out. We plan on traveling all over the Country but most of my use will probably be in California. There are several "Encore" parks in California that I would really like to be able to use under the TT rules. South Lake Tahoe, Pacifica, and Santa Cruz just to name three. What would I have to do to get those RV parks included? I may even buy direct from TT if I could get those parks included.
Edit: And Oceano! If I had those four parks on the 21 day stay rule I may full time and just travel between the four of them! And I'd pay good money for the membership even if I had to buy from TT.