I we love this bounce house! We bought it for our 10 year old's birthday party. We had 15 girls. We kept it to 6 or 7 at a time for safety. There was plenty of room. The girls had so much fun. They brought a few beach balls in and played all sorts of games including dodge ball, for a very long time. My 6 and 4 year olds loved it too. We are so happy we still have it for many family fun days and birthdays in the future. The help I received on the phone before was curteous, kind and helpful. I trusted the reviews and I was comforted that the company will work with you if there is a problem. We are using it outside but purchased a heavy tarp online for underneath.