Sounds reasonable enough.
My kids have been surprisingly well behaved around my tarp when I've had it pitched in the backyard. The only incident was when my 9yr old poked a tiny hole in it with a stick. He's completely incapable of leaving sticks alone. It's like a subconscious compulsion. A lot of times I don't even think he even realizes he's got a stick in his hand until I'm taking it away from him... I expressed my dissatisfaction, I think quite adequately, though it really wasn't that big of a deal.
The tarp was my first myog project, made from wicked cheap Walmart 30d ripstop, that I later siliconized myself... But then I wasn't happy with my side guy out loops so I ripped them out (leaving many small holes, yet to be patched) to relocate them...