I destroy the documents if other players are being stupid - i.e. start shooting as soon as they spawn thus getting themselves killed and getting everyone else shot to pieces as the try to get to the mission. Either that or I'll just walk/drive off away from the carpark as I just find it physically impossible to do this mission with randoms.
Any other mission I'll happily put up with randoms but not RR just purely because of the behaviour displayed by other players in this mission. I can do the whole mission and it'll cost me $120 in ammo and $400 (or is it $500) in armour yet other players go nuts with the mini-gun or RPG's and wonder why they're broke. Just annoys the sh*t out of me.
You can wipe out half the garage with the heavy sniper before anyone moves from the spawn point. No need to wait.
We use a bullet proof car now anyway, too lazy to walk in.
You wait because there are other players so (in my view) you should make sure everyone has a chance to take part and enjoy the game. Excluding other players is totally unacceptable in my book. If you want to solo it, don't waste my time inviting me to a mission that'll be over by the time I get to. i think I'm the only player in the entire GTA O community that thinks like this.