I'm gonna miss it (no way I can handle a rifle for 2 hours at this stage in healing) but please please please someone take OODLES of pics and give us a snarky detailed write up!
Sounds like fun. Perhaps a few things to play the strengths of each rifle. (These things are always set-up to favor the strengths of the AR.)
How about a speed fieldstrip competiton. (Fun blindfolded.)
Fastest time to empty a thirty round magazine. (Safely of course.)
Target shooting for accuracy. (Regular paper targets.)
Target shooting for damage. (Have to break a cinderblock into rubble.)
Most rounds fired without a malfunction. (Jams, fte, etc.)
Best Looking and Ugliest Gun Contest. (Crowd can vote.)