We have a friend that works for ESPN who has gotten us complimentary three day passes. Which is great, and we appreciate that. Except for the fact that we will be there a week. Is there any chance we could pay to upgrade these tickets to six or seven days? Does it work like regular tickets, as in once we use them, they are locked in as regular tickets and upgradeable, or are the complimentary ones different? I think if we have to buy our own three day tickets in addition to these, it will save us maybe $90, which is good. But if we could only spend $90 to upgrade...That would be awesome!! Thanks!