Hi Jennifer!
Thank you for bringing your question to the Disney Parks Moms Panel!
A trip with a large family means a large amount of fun! Your trip is getting close, so I imagine the excitement level is very high in your household!
My family enjoys using the
Park Hopper option on our trips. I have teenagers, so they like the flexibility of being able to come and go as they please. They may grab a meal in one park, go ride something in another and catch the fireworks at a third.
You can definitely add the Park Hopper option to your ticket either before your trip or anytime during your trip. However, the Park Hopper price will be based on the total number of days your ticket is, regardless of how many days you've already used. Because of this, it is better to decide in advance or early on in your stay if you want to upgrade. Here is some
more information about upgrading your Walt Disney World park tickets. I hope this is helpful! Have a magical trip and please let me know if you have any other questions.