Matthew,
We have 2 courses at our club. On the championship course there are only something like 6 carts for those with medical clearance to take a cart. There are times when members can carry there own, but usually caddies are required. However, junior golfers can always walk and carry their own. On our second course many do take carts. However, the operator has to have a valid drivers license, which means they have to be at least 16.5 years old. I don't think I would like to get into the habit of paying for my 16 and 14 year old boys to ride a cart--unless its their second round. Let 'em walk!