I did this one about three years ago with my niece for her birthday party and her friends. Just a few of us adults took part as everyone else thought it was too childish.
It felt great to scream and yell in the dark ... I became a squad leader, rounded up my team and got them to scream as loud as possible as we charged the enemy .. I also ran with my niece and ran cover for her .. had a total blast and I was completely exhausted at the end of it all. Nothing like playing games with a bunch of sugar intoxicated ten year olds.
I woke up the next morning and I couldn't stand up ... my thighs were completely crapped from having to crouch, walk and run for two hours the day before.
All completely worth it though.