Wait till you get over there and buy them at Disney Entrance! Your going to have to Q up anyways so you might as well wait plus you'll get loads of special offers like adding on two extra days for $5 each 3 days for $8 and so on. We were going to get a 10 day park hopper but worked out that we wouldnt really have the time to use all in 10 days especially when we had Universal Studios and Sea World Flexitickets too which include 4 other parks!! And we were only going to be there for 14 nights and theres shopping days too!! So make sure you plan out your days if can!
We decided to get the 5 day hopper pass and added on the extra 2 days for $5 saving us about $100+!!
Dont buy tickets at the hotel tickets desks they are a rip off!!
And note if your buying off e-bay or second hand tickets all Disney tickets that have been used but still have days left on them will have finger print chip on them! So if you buy second hand, although there will be days on the tickets, your finger prints wont match when you scan your card and finger print at the entrance!