Tourists check into any of the hundreds of hotels. We have hundreds of thousands of hotel rooms in Central FL.
Even if people drive their own car to Orlando, they are sharing elevators, lobbies, restaurants, gas stations, shuttles to the parks, busses and monorails in and around the parks, and so much more. Many return to their hotels in the heat of the day to swim. They get back on busses to return to their cars, drive to a hotel, possibly take the elevators back to their rooms, change into swim suits and go sit on pool chairs that others have sat on while sweating in the sun. Then in the evening they return to the parks. On shuttles, busses, and monorails, that have been used all day. When the parks close late in the evening they repeat that. Tourists are in crowds literally all day long. They wake up, run to a fast food restaurant and repeat the process for several days. As thousands depart, thousands more arrive, walking into lobbies as others check out, then going up elevators and others come down.
If I go to the beach or the springs, my family and I can wake up, fix my own food, and go find a place to sit and thats that.