I'm trying to find a dome in the Houston area that can be used in a week-long summer camp for kids with pediatric cancer. It will be housed in-doors and must be able to accommodate at least 10 kids in wheelchairs with IV poles. Any ideas are eagerly welcomed!

If the dome is to be inside, maybe an inflatable would work. It all depends on what you want.
http://www.southerninflatables.net/main.asp?id=147_437_8492
Hi Dhope
Check out World Shelter's U-Dome and Q-shelter. Maybe you could use several smaller domes instead. These are smaller than what you are thinking about. They're more like four person domes. They are very light weight for their strength.
http://worldshelters.org/
World Shelters
Dome, Inc. makes the large size domes you want. Check with them, too.
http://www.domeincorporated.com/
Dome Inc
Dick