'Caddying' at a blue collar Northern English club was a rather different deal... My parents were the Steward and Stewardess so we lived on site. When I was 13 until 15 I 'caddied' for the professional - Leo Feeney - in his friendly matches at the club which was hugely enjoyable and quite an education; he was an excellent golfer. However this 'caddying' meant pulling his staff bag on a pull cart and clubbing him when he let me, keeping the clubs clean, tending the flagstick, and occasionally shagging balls on the range for him - this was the most fun as he's sometimes have me catch the wedge shots after one bounce left hand them right hand depending on the draw or cut spin. I did this for a year or so and then he announced that he had a tournament coming up in Nottingham (at Sherwood Forest. I think I recall) and I'd be caddying for him if I was free. No pull carts at professional tournaments - I'm embarrassed to say that I wasn't ready for that and, man, are those 1970's leather staff bags heavy!
Story aside, I did learn absolutely all you need to know about golf over those three years and that includes course management, shotmaking, etiquette and a fair bit about gambling, oneupmanship etc.. Quite how I turned out to be such a mediocre player is a mystery, really.