I was wondering if I buy a 5 day pass to Disneyland if there is a time frame I have to use it, or could I use 2 days this year, and 3 days a year or two from now. Thanks!
There are basically two expiration dates. First, it must be used by the end of the calendar year (if you get tickets near the end of the year, I think they might not expire until the end of the next calendar year, though -- someone else would have to confirm that). Second, once you use them for the first time, you must use the remaining days within 14 days or you lose what remains.
The first day of use of multi-day tickets must be on or before December 31, 2016. Multi-day tickets must be used within 13 days of first use or by January 13, 2017, whichever occurs first.