Don't bring any glass!
Don't be a d*ck!
Thats it regarding rules really. Flat site, relatively easy to get around (assuming the weather plays ball of course), friendly chilled vibe.
Its a belter!
As others have said it really is chilled with few rules. Bring own booze and food is fine and booze into the arena too is fine but obviuously support the traders and bars too.
All camping is close, 10 mins walk, maybe 15 to Gibbs. They have sections like Family, quiet etc but there really is no difference between them but stay away from the Magic Teapot if you like sleep.
Bring warm stuff for the night - it gets cold. Sometimes very cold.