Just like the others have said, carb up the night before, hydrate and take snacks. Peanut butter and jelly sandwiches are a great way to keep you going between games and bananas. I usually do 4 on saturday and 4 sunday when we have tournaments. Use each game to work on something, staying down on balls, proper positioning and angle, plate stance, you know the little things. By the time you know it......ITS BEER:30!