Upgrading from a 7 day Ticket to an 8 day

[Canadian Disney Mom]

Is it possible to upgrade a 7 day water park & more hopper to an 8 day waterpark & more hopper at the gate? We have APs but my sister only got a 7 day for an 8 day trip. I think I might spring for the $10 to upgrade her at the gate it I can.

 

[mesaboy2]

Yes, easy. Might be best to wait to add the day until after the ticket has been used.

 

[Canadian Disney Mom]

Thanks! I thought I could but started second guessing myself