Hi Ashley - Congratulations on your impending marriage!
There are lots of different ticket options, depending on what your plans are. Base Magic Your Way Tickets allow you to visit any of the four parks, one per day. You could choose to visit Epcot with one of those tickets, but if you do, you wouldn't be able to visit the Magic Kingdom on the same day.
If you do want to visit multiple parks per day, I'd definitely recommend the park hopper option. With the park hopper option, you can go from one park to another, all in the same day.
There's also a water parks and more option for tickets if you want to visit Typhoon Lagoon or Blizzard Beach.
For more information on tickets, click
here.
Have a great vacation!