Disneyland is a busy place after hours. 600 late night maintenance workers clean up after park visitors, scrape gum off of sidewalks and benches, touch up wear and tear, repair mechanical attractions, and weed the gardens.  Security workers check the usual hiding spots for guests who’ve decided to spend the night.  An estimated 200 cats who have moved in over the years come out of hiding and help manage the rodent population (presumably overlooking any presence of Mickey and Minnie). Disney workers have set up feeding stations for the cats and take steps to keep the population under control. After the streets are clean and the sun rises, the rope drops and the crowds enter to start the cycle again.