Yes, staying "overnight at Disney" is a core part of the vacation experience for millions of people, but it typically refers to staying at one of the official Disney-owned resort hotels located on the property. These range from "Value" resorts like Disney's All-Star Movies to "Deluxe" villas like the Grand Floridian. However, if the question refers to staying overnight inside the theme park itself after it closes, that is nearly impossible for the average guest. Occasionally, Disney hosts "24-hour" events where the park stays open through the night, but guests must still leave eventually. The only true way to sleep "inside" a park is at the exclusive Cinderella Castle Suite in Florida or the 21 Royal suite in California, which are usually reserved for sweepstakes winners or high-profile guests. Additionally, Disneyland Paris features a hotel (the Disneyland Hotel) that is built directly over the park's entrance, effectively allowing guests to sleep within the park's architectural footprint.