Do SW tickets expire?

[Lizzydoll73]

We are not going until 2006 but would like to purchase as much as I can before we go. Do the single day tickets have an expiration date? Are they only good for the current year? Last time we went was 1998 and I thought the tickets expired. Thanks for any help.

 

[dbail2]

Just got mine today and they expire March 31, 1005.