I'm not a fan of night games. Not specific because of NVG. It's a fine line on 'pay to win' airsoft. It's dificult for an organiser to balance things out during a game where the NVG's are not balanced in the teams. We had it during Bellum. Our team had a lot, the other team did not. If you know this before hand, you can change tactics. So that might be a solution, list the expensive things you use during the game.