Howdy Robin!
Welcome back to the Disney Parks Moms Panel. It's always so much fun to help out a returning Guest. It sounds like you are planning a wonderful vacation to The Most Magical Place on Earth. I hope your trip is truly unforgettable.
Robin, it you decide to upgrade your
tickets to add the Park Hopper option, you would be upgrading for the entire length of what is left on the ticket. You can't just add it for one day. If you are planning on park hopping I would add the option before you begin using the tickets, that way you get the most bang for your buck. I love the Park Hopper option as it lets my family experience a park with morning
Extra Magic Hours and then enjoy a different theme park for the afternoon. It also allows my meal scheduling to be a little more relaxed as I am not sitting at the computer hoping a meal time opens up at a certain theme park we will be visiting for the day. With a Park Hopper I can enter a park for a meal and then leave if I so choose.
You can upgrade your tickets now by calling a Disney Cast Member at (407) 566-4985. If you would like to do it once you arrive, just stop by any ticket window or Guest Relations and they can hook you up. It's really a great investment and I encourage you to think about adding it.
I hope this has helped. If you need any other assistance, you know where to find us.
Dream as Dreamers Do,
Jen