We struggle with this too. If you're 100% sure you won't go in June of 2012, and won't be wanting to squeeze in another trip in early July then I who'd renew online within 30 days of your exp date. Yes, you technically extend the use of the AP by getting a new one on your July trip, but if yo won't use that extra time, might as well save the money with the renewal price. We got new ones this year and finally pushed our exp date out so we can do a trip in may this year. our Disney wedding anniversary is in April, so we seem to always buy or renew then, and then the following year end up vacating close to Easter to use our ap's one more time. This year we let them expire and got new ones in late june when we added a quick trip.