Hello Sarah! It looks like you have been exploring the calendar for Magic Kingdom Park for the month of May and noticed those two special-ticketed events! I am happy to tell you a little about both!
On select nights throughout the year, Magic Kingdom Park offers Guests the opportunity to experience the park with very low crowds and very low (if any) wait times for select attractions! It's pretty much a Disney dream come true! This event is known as
Disney After Hours and it is available at both Magic Kingdom Park and Disney's Animal Kingdom (on different nights). In addition to a late night in the park, your admission also covers some snacks and beverages. I also like that Guests who have purchased these special tickets can enter the park as early as 7:00PM even though the event doesn't start until later! It's a great deal! This is the event you see listed on May 18th. It is available on other nights throughout the year as well.
If late nights are not quite for you, then perhaps you might enjoy
Disney Early Morning Magic in Fantasyland at Magic Kingdom Park. On select mornings throughout the year, Magic Kingdom Park allows Guests to enter Fantasyland to experience some of the most popular attractions! These mornings are highlighted by low crowds and low (if any) wait times for attractions! Arrival for this event begins at 7:30AM. As an extra added treat, breakfast at Cosmic Ray's Starlight Cafe is included with the price of admission! This is the event you see listed on May 21st. It is also available on other select mornings throughout the year.
So there you go, Sarah! Late nights or early mornings! Take your pick! I hope that you have a great visit!
Hakuna Matata! Jonathan G.