Ticket Question

[JoiseyMom]

We are in the process of booking a package for the last 10 days of August. We only need 5 days of passes, so booked 5 days base that do expire. Now, if we want to make them 10 days with no expiration, can I do that at check in or another time, and if so, will they cost me more then if I did it at booking??

I hope that made sense.

Thanks

 

[wdwfan1]

I was told I could call to change the ticketing portion of the package or change it at check in