We purchased 4-day hopper passes from Undercover Tourist and received 2 days free. We only used 4 days and wanted to know if we can convert the last two days to non-expiring tickets. We're already home and didn't think about it while we were at the parks. I called our local Disney Store and they said it has to be done at DisneyWorld. Is that correct? Is there nothing we can do? We'll probably be going back in 2 years and would love to be able to use those 2 days. Thanks.