Just a little insight:
Th night crews are hardly ever seen by guests except maybe for a few minutes on EMH nights if they decide to walk to their details. Not condoning regular costumed custodial or tooting my own horn but they simply are there to upkeep what has been done during the night. If the night crew has done their work right, you shouldn't notice the work they do. They deep clean every inch of concrete, carpet, restroom, queue, ride and restaurants in the parks. Once their work is done it's up to the day custodial (in the white costumes) to up keep the cleanliness.
I dispise it when people call them a "janitor" because they say it as to degrade the role. Most people don't even know the amount of effort and lengths that people in the night have to go through, including the massive equipment used, to make it look fresh each day. This also includes horticulture, food distributors and stockers, maintenence and show support.
Every sweeper truck you may see on property is deployed from Epcot. During the day they sweep the parking lots of the resorts and roads. At night they do the parking lots of the parks, water parks and DTD. One is even on standby behind MK while the fireworks are going on in order to quickly clean up the debris on the roads to quickly them open again.
