We have October UY for WDW contracts. The reason was that we generally like to go when it's not so hot (don't tell our upcoming July trip, though). But for DL we often go in August or September so we got a June UY to just cover all of summer and give us the ability to space out WDW and DL visits if we happen to be doing both in the same year. Now I wish I had met somewhere in the middle for both so they'd have the same UY! I think August would have worked for everything, but can't change it now... Oh well