If they are real PHP's - not the new type of ticket, they do not expire! We used plusses from a trip 2 years earlier, with no problem. Hardest part was keeping track of the tickets for two years, LOL!
Thanx, yup, they are the old PHP's. So when I go in Aug. I will get the PHP's w/o water park. We'll only go once. 3 of us so I will buy one tix at the gate.