Hi Michelle! How exciting that you will be enjoying the magic of Walt Disney World in just a few short days! Since you have five day Park Hopper passes, you will definitely be able to visit each of the four theme parks. My recommendation is to go to each park once, and then you'll see what you've missed and what you want to come back for. Regardless of my daughter's age, from when she was two until now at 15, we always seem to make several visits to the Magic Kingdom!
If you're staying at a Disney Resort, then you will enjoy Extra Magic Hours, when one theme park is open either earlier or later for resort guests only. We love staying at the parks late at night, so I choose what park to visit based on the
park hours. Since you're heading out soon, I highly recommend you select your
FastPass+ entitlements as soon as possible as this will dramatically cut down on your wait times. Simply go into My Disney Experience and follow the prompts.
I hope this helps get you started Michelle. Please write us back with any other questions!