Tony,
I clearly haven't learned from Pat Mucci nearly as well as you have!
You guys at RCP are very proud of being a 2 ball club, aren't you? I could, I think, easily name 10 clubs, and could maybe even think of 15 if I really tried that "favour" 2 ball play. How many golf courses are there in the UK? In the context of this thread, however, your post was misleading. 2 ball play really is not significant enough in the UK to be a major ditinguishing feature when comparing UK and US cultures. In particular this thread was about access and, as I think even you are admitting, most 2 ball clubs relax that rules for visitors.
There's plenty of foursomes at Elie, by the way, but medals are played in 3 balls and nearly all casual play is in 4 balls.