ummm great idea but I think rent a gaurd would be waaaay better, they wont cramp the fun and can sure yell or dial 911 as easy as anyone, them just walking around all night will prevent anything from going on I am sure...if the real guys are around..
just may get some newbie that will not be keen on a little display of traction loss....
I would kick in some bucks also, we use them out here for our buildings and two nights wont cost much.
just my 2 cents.