Hi Valerie! Thanks for writing the panel with such an interesting question! We don't always know why the parks hours are as they are, but I can give
you great options for your Monday when the Magic Kingdom closes at 7 pm!
#1 - Go to the Magic Kingdom. Early. The park opens at 9 am on September 7, so if you're there at opening time, you'll be able to enjoy 10 full hours of magical fun! Numbers 4 and 5 below provide suggestions for your evening.
#2 - Check out other theme parks. Disney's Hollywood Studios is open until 8 pm. If you're a Disney Resort guest, you can enjoy Extra Magic Hours until 10 pm. The Animal Kingdom is open until 5 pm and Epcot is open until 9 pm.
#3. Water Parks! Both Blizzard Beach and Typhoon Lagoon are open all day for tons of fun.
#4. Head to Downtown Disney or the Boardwalk in the evenings. Downtown Disney is hopping until 11 pm, so it's the perfect spot for an evening of fun, and the Boardwalk is always open late with lots of entertainment and excitement.
$5. Have a lovely dinner.
Disney World has countless of fantastic restaurants to choose from. End your evening with a relaxing hot tub at your resort.
Hope these suggestions help Valerie! Wishing you the most magical vacation!