One particular couple I know who go to the San Diego Comic Con every year make a trip to the hospital there the morning before Preview Night.
https://youtu.be/1abDtr-Ffnw
And it turns out that this really happens at Primary Children's Hospital in Salt Lake City, Utah.
https://youtu.be/p9SL8UKa3h8Video can't be loaded because JavaScript is disabled: Spiderman Cleans Windows at Primary[...]