Wayne,
my club in suburban Philadelphia...
1. Caddy Fee
18 Holes- There is no "set fee" for caddies as they are independent contractors...
Including tip, a caddie usually gets $50-60 for 18 holes, half of that for 9 holes.
2. Cart Fee's 18 holes- 24.50
9 holes - 12.50
3. When 1 or 2 players take a caddie and the others take a cart. Again, nothing is required, everything is optional but I've seen it range from $0-$25, with $10 being most common.
4. When a four caddie accompanies two carts- normally 20 plus tip, which usually equates to 25-30pp total. (which, as a former caddy I might add is a heist! Some hard working caddie carries double and maybe makes 100-120 bucks and someone else carrying 4 putters makes the same
) Unaccompanied guessts not walking are normally required to take a forecaddie...
5. I do not believe pull carts are allowed..