Ive worked with quite a few chefs over the years,a small minority of whom the only tips i would give are stop scratching your nuts,cooking brandy is for cooking not drinking and dont sleep in the wheelie bin
I'd add two more tips ( and this is from real happenings ) :
1. Don't get caught shagging the chambermaid in the toilet
2. Don't get caught w@nking in the veg store ( creamed potatoes has a whole different meaning to me nowadays ! )