We have been TTN members over 25 years. When we joined they only had 13 parks. From Washington State (and 1 or 2 in Canada) to San Diego. We have seen it grow from 13 to as much as 40 or 50. Then the money problem hit the USA and many RV membership CC folded. TTN sold many that were not used that much. And making changes they managed to keep going. I think there are about 80 parks that in the system now. We don't use it that much because some are more than 1hr from a big City.
Yes and because they have opened some
parks to the general public some sites are hard to get. But the general public (encore) types have more rules that the regular members. Also there are some Encore
parks that are not TTN parks they just honor TTN memberships.
If you have not been to a TTN park just take a drive ask for a show and tell, And look for a TTN magazine in the club house. There are often ads in there.