Hi Bernie, The weight capacities are based on several factors, including but not limited to the space available for each user to move around. 10 users is way too many to play safely together at once in the Magic Castle. The Magic Castle is recommended for 3 users at a time. For more users at a time, we do have larger bounce houses that can accommodate more kids. The Big Ol Bouncer can support up to 6 kids at once. At 12' x 12', it's the largest bounce that we have in the home use category. You can view that item here: https://www.blastzone.com/big-ol-bouncer-inflatable-moonwalk Sincerely, Blast Zone Support