The 13 x 13 bouncers hold 8 to 10 children at a time. The 15x15 bouncers hold 10 to 12 children at a time. We clean bouncers before and after use. Eating and drinking in bouncers/slides/obstacle courses are prohibited. Children must remove shoes before they enter into the bouncer/slide/obstacle course. An outlet within a 100 feet of the bouncer/slide/obstacle course is required or you may rent a generator for additional $65. In addition, the bouncers/slides/obstacle courses will only be placed on a flat surface.