Hi Sharon ~
That is an excellent question. A LOT has changed through the yEARs at the Walt Disney World Resort.
Planning a break from the theme parks can be a great idea. We often leave to go back to our Walt Disney World Resort hotel for a swim or a nap. We also leave to dine at locations outside the theme parks including Disney Springs and restaurants located in the resort hotels.
I have great news for you. With the 1-day, 1-park tickets, you are still more than welcome to leave and re-enter the same park as many times as you would like on the same day. You do not have to do anything special as you exit the theme parks so no more hand stamps. You will be allowed to re-enter by simply re-scanning the same
MagicBand or admission card along with your biometric identification (scanning your finger) when you return.
Keep in mind that if you plan to visit more than one theme park per day, you will need to add the Park Hopper Option to your tickets which gives you same-day access to all 4 theme parks (Magic Kingdom, Epcot, Disney's Hollywood Studios, and Disney's Animal Kingdom theme park).
Please feel free to visit us again with all of your planning questions. We are hEAR for you!
Wishing you minnie magical memories :-) Allison V.