This is the biggest obstacle course we have. It is a great choice for a large event in the summer. The water slide makes this obstacle course stand out. The obstacle course can be configured without the pool and the slide can be a dry slide. See the "Obstacle Course" category. Can be set up on grass or any hard and clean surface. Rock Rental charges 5% for credit card payments, no additional charge if paid by cash or check. Rock Rental's delivery fee is based on $2.00 per mile round trip without a trailer and the travel fee for 1 vehicle towing a trailer is $2.50 per mile one round trip from El Cajon with a zip code of 92021. If the location does not have a power source within 100 feet of the back of the unit, you will need to add a generator to your reservation.