Hi Kim!
Wow, it is so awesome that you are planning a Walt Disney World vacation in the future! For example, f you purchase a 5 day Magic Your Way Ticket with the Water Parks, Fun, and More Option and the Park Hopper Option then you will have 5 park days (in Magic Kingdom, Epcot, Hollywood Studios, or Animal Kingdom) and 5 Water Parks, Fun, and More Options (which you can use for Typhoon Lagoon, Blizzard Beach, DisneyQuest, or ESPN Wide World of Sports Complex). Your Magic Your Way Tickets will be good for 14 days from when you first use them. So you could use a Water Park, Fun and More Option on one day without using one of your Magic Your Way Tickets, like for DisneyQuest on your arrival day. If you do it this way, then you could have enough tickets for 5 full days worth of park visits. You can also go to a Theme Park and a Water Park in the same day (you would be using one Magic Your Way Ticket and one Water Parks, Fun, and More Option on that particular day). It is really up to you how you use your Magic Your Way Tickets and Water Parks, Fun, and More Options. With the Park Hopper Option, you will be able to go to more than one theme park in the same day as well.
I hope that your next Walt Disney World vacation is truly magical in every way!
Keep Dreaming Big!
Marc