Hey there, hi there Lori,
Welcome to plan Disney!
While I have stayed at a park from rope drop (park opening) to the end night, it can be a really long day, even if you love Walt Disney World.
Great news! You can absolutely leave the park and head back to your resort to swim, rest, take a nap, or just relax. Then you can return to the park, rejuvenated and ready for an evening of fun. Even if you don't head back to your resort, sometimes just leaving to dine at one of the
Disney Resort Hotels or do some shopping and dining in
Disney Springs can provide the break that you might be looking for. I highly recommend splitting up your day a bit in this way. Just keep in mind, unless you have purchased the
Park Hopper Option, you can only return to the same park where you began your day.
Hope this helps. Happy planning!
Diane