Hi Ashlie!
Thank you for bringing your question to the Disney Parks Moms Panel!
We almost always add the
Water Park Fun & More option to our tickets. It's a great deal, in my opinion.
Basically, you have 14 days to use your three days in the theme parks plus your three visits to the water park fun and more options. You can't enter more than one theme park on the same day, but can do as many of the others as you like.
For example, you could go to a water park in the morning (using one of your "fun and more" visits), play miniature golf in the afternoon (using another "fun and more" visit) and then go to the Magic Kingdom that night to watch parades and fireworks (using one park day).
You can spread them out over 14 days or fit them into a tighter schedule. Totally your call!
I hope this helps! Please let me know if you have any other questions.