I make special CQB events in Sweden.
Small teams of 5 to 8 people play against OpFor controlled by me.

This day, with two teams, we consumed 300 grenades, 1 kilogram plastic explosives, 80 meters of detonating cord, a lot of pyrotechnic devices, 30 liters of fuel and a lot of sand/dirt.

Some of the special rules of the game: Correct uniforms and gear, only midcaps (maximum 80bbs/mag), max 110mps with 0.2g bb).