Hi Sandra,
Welcome to the Disney Parks Moms Panel! I completely agree if you only have time to visit one park at Walt Disney World Resort then
Magic Kingdom Park is an excellent choice. Unfortunately, there are no discounts available for
one-day theme park tickets. There is good news, though. Walt Disney World Resort has just introduced theme park ticket pricing that is different based on when you go. If you can be flexible about which day of the month/week you visit, then you can hopefully choose a less-expensive day.
If you haven't already, I recommend downloading the
My Disney Experience app for your smartphone. You can purchase tickets from the app. If you don't purchase your tickets in My Disney Experience you can still add them to your account. Once you have added them, you can make
FastPass+ selections up to thirty days before your visit. If you're staying at a Walt Disney World Resort Hotel you can make FastPass+ selections 60 days in advance.
Sandra, thank you for stopping by with your question! I hope you'll let us know if we can help you with any other planning questions!
Wishing you a magical visit,
Amy H.