We have it with 2 zones and use it quite a bit.
We are down to about $7/n already and we've only had it since May. Reservations only 60 days out can sometimes be a bit tricky at high volume parks - for example the one in Wells, Maine, is almost always full...but you can "dry camp" instead if you wish (included), and that's always open. That's actually the only park we've ever had issues getting into.
If you do get it, remember, its always on sale or there is some kind of deal. We stayed for a week at an park before we had it, went and talked to the sales guy, and they rolled that into our payment for the 1 year pass and zones. We then immediately stayed another week...and basically paid off the pass with just those two weeks of camping.
2017 F-350 6.7 Diesel, CCSB SRW - formerly 2005 KR 6.0
2018 Alpine 3660FL - formerly 2005 Alfa SYF30RLIK
--Full time 2016 to 2019-- Seasonal now