We just got back from WDW. We had 7 day park hopper tickets, but due to work emergencies, DH only used 4 of his days. Is it worth it to add days to his ticket and buy the no expiration option (we usually go to WDW every year or so)? If so, is it possible to do it if you're not actually at the parks? How many days can we add? The longest ticket I noticed was 10 days, so is 3 the maximum number of days we can add to a 7 day ticket?