Upgrading tickets?

[TheShellys]

I have completly unused 4 day park hoppers and I'm looking at upgrading to 7 day MYW tickets. How much of a pain is this? Where can it be done? I hope this is much cheaper than buying 3 day passes for everyone.

Anyone done this? Advice please....

 

[tbelfonti]

First try the hotel guest services (on property hotels). Otherwise I'd recommend guest services at any park