Knowledge is Key

A key to a great game is that everyone should be aware of all rules, details of the field, boundaries, start / spawn /objectives locations, all need to be explain well, or even print out a few copies for reference beforehand. If maps are available one copy for each side can be a tactical godsend for pre-round planning.
But also note as a player you must be aware of all rules and if you don’t understand anything, please ask. As its better to ask a silly question, than to make a silly mistake.
If you get caught out by not knowing a rule, it can only be your fault for not asking the right questions or listening to the instructions. Same with equipment, if anyone is using smoke, grenades or claymores or other special equipment, it’s better to let everyone know before the game begins, than to have a game end pre-maturely.