Hi Arianna!
Welcome to the Disney Parks Moms Panel. Magic Kingdom is such a classic Disney destination filled with so much fairy tale fun, but with all the exciting things happening at Walt Disney World right now, I completely understand why you may want to visit other parks too!
For
single day tickets, the price of the ticket varies based on the season and the park you are choosing to visit. So if you want to visit
Magic Kingdom, over say
Epcot, it will currently cost you a tad bit more. Beyond the single day ticket though, there is not a park assignment. So if you have a 2 day park ticket, there are a couple different options. The first is the single park per day option, this means you'll be able to visit 2 different parks, or the same park twice, while on your trip. The second option is the 2 Day Park Hopper Option, which allows you to bounce between the main 4 parks at your liking throughout your 2 days. The last option is the 2 Day Park Hopper Plus Option which gives you the added benefit of the two water parks,
Disney's Typhoon Lagoon and
Disney's Blizzard Beach. If you have any of these two day tickets, you do not to do anything to your ticket and you will be able to visit Magic Kingdom plus another destination!
Please let us know if you have any other questions!
-Lindsey ºOº