HI! Welcome to the game!
My advice:
Invest in a good pair of boots. The camp is super muddy 90% of the year and wet feet is the worst (bring lots of socks regardless!)
Also, remember to bring bedding! It's a girlscout camp. Sheets, pillow, etc. the works. I forgot my pillow once. It was awful.
We're a dirty bunch, but if you're a cleanly person, there are showers and bath houses throughout the camp; if you would like, bring toiletries!
Can't wait to see you at game