Magic Your Way base tickets include admission to the four main Disney theme parks: Magic Kingdom, Animal Kingdom, Epcot and Disney's Hollywood Studios. With a base ticket you may visit any ONE of these parks per day. You are welcome to leave the park and return later, but if you do this you must return to the SAME theme park.
If you want to visit more than one of the four theme parks per day, you will need to add the Park Hopper option to your ticket.
To visit Typhoon Lagoon, Blizzard Beach or DisneyQuest, you can either purchase single-day admission tickets to these venues, or you can add the Water Park Fun & More option to your base ticket.
You can learn more about these options
HERE and
HERE.
Both the Park Hopper and the Water Park Fun option can be added to your base ticket at any time during your visit to WDW. Simply go to an theme park ticket window or guest relations office and they will be able to upgrade you. You will only be charged the difference between the two ticket types.
Have a great visit to WDW!