If you have guest services check them, ask for a printout. My sister just had an old ticket checked our last trip and was told there was one option left on the ticket. Went to the water park and the ticket didn't work - it was all used up. So she had to buy a day pass.
The problem is - she had another old hopper ticket back at the room that she knew still has options on it!! Too bad she didn't drag it along just in case, but there is always the worry of them getting wet.
Guest services seems to have a hard time figuring out what is left on a ticket, so it might be wise to have it double-checked.