Hey there, Jenny! Thanks so much for popping in to planDisney with your questions. A warm welcome to you!
Either one of the changes you want to make would impact your
park reservations. Let me explain how.
Changing a
park reservation requires cancelling your current reservation to make a new one. This can be risky depending on what the
reservation availability looks like. Sometimes reservations appear available one minute and they are gone the next!
Upgrading a
One Park Per Day ticket to a
Park Hopper ticket is subject to reservations being available as well. One Park Per Day tickets and Park Hopper tickets have different reservation calendars and possibly different availability.
My suggestion is to visit the main entrance ticket booth once you arrive to see if upgrading to a Park Hopper ticket is possible, based on reservation availability. You can also check the
reservation availability calendar online but you cannot upgrade online – you would need to do this once you arrive.
I hope this is helpful, Jenny. The magic awaits!
Kamini