Check to see if the game your attending or wanting to attend has an early registration, if so you could possibly get a cheaper entry price or a cheaper paint price.
Big Games and Scenario games are different, don't be confused by the terminology. Most big games are day games, meaning 8-12 hours of play then it's over. Scenario games usually run 24 hours or two days and no night play (usually due to the fields insurance).
Big Game - One day of balls to the wall fun, maybe one -multiple objectives to determine a winning side.
Scenario games - 2 day event usually, missions every hour, props, general kills, spies, tanks, saboteurs, engineers, you name it, if it can happen in real life (minus the death part) it is usually a part of a scenario game. Once missions, props and other points are accessed, the side with the most points wins.