The reason these obstacle courses are for home parties only is because you can enter from the right side or you COULD enter where the step is at the front of the bounce house. Because of this, it is really hard to monitor at events where there are tons of kids and you only want them to enter the right side and exit the left side. Plus, with the bouncer in the middle, they all want to STOP and jump for awhile instead of just going through the course, which results in too many kids in the jumper. This makes them perfect for home parties!