S.B.
When my son turns 7 in November we are thinking about a party at Cinnamon Creek Ranch. It's an archery range. Apparently they set up the equipment and help the kids out and they shoot at balloons. I have no idea of the cost. My husband and son are both archers, so this may have more significance for our family.
I have heard that the Ft Worth Zoo has great parties. But they are really strict on the number of guests.
Cabelas also does parties. You get a private room, fish food to feed the trout and tokens for the arcade shooting game. There is also a scavenger hunt. I have heard that Bass Pro Shops (Outdoor World) do have parties. Someone I know had a fishing party there a while back. Apparently there was staff there to set everything up and the kids got to fish.