Dan--
Thanks for the comments; I'm glad to know we did catch Porthcawl with a bit of a strange wind. (However, the 10th played GREAT downwind. In our two rounds there, we couldn't quite drive the green, but 4 was still a darn good score, with the narrow, angled green. Also, the 13th was intriguing downwind. After a 3W to the top of the hill, you had just the shortest of pitches downhill and downwind, but with the hole toward the front and that bunker about 50 yards short of the green (EXACTLY where you wanted to land your pitch) it was maddening trying to get the ball within 30 feet of the hole.)
Even though they were protecting the course for next week's British Amateur, we still played from what looked to be the standard medal tees (something like 6400 yards). While I know the 15th can be stretched far enough to allow anyone to bang away with a driver and appreciate that it is intriguing to have a hole with a cross hazard that cannot be carried from the tee (to test your nerve to see how close you will drive to that hazard, e.g., the 16th at Troon), having those two holes back-to-back was not that desirable to me.
I'm glad to hear the 18th plays much different. It is a neat prospect from the tee, with the "horizon fairway" (Tom Paul would love it!). With the wind helping, we didn't realize the first time how far left you need to go off that tee. As a drive and a mid-iron, it would rank right up there with (and possibly ahead of) St. Enodoc and Lundin as my favorite 18th in GB&I (other than the Old Course).
The 14th at St. Enodoc was one of the neatest holes of the trip. As Paul writes, the tee shot grabs your attention -- because of the terrific views in every direction, the sharp drop-off to the 10th fairway to the right, and the prospect of finding the sloping fairway. The wall to the right of the green that is almost part of the green is unique (it and the "wall" on the 3rd might be the best walls in golf!), but the green complex itself is very interesting, with the berm in front of the green and the left to right tilt of the green itself. With the front hole location, we found the strategy to be to risk hitting driver so that you could just bumble a chip over that berm with just enough steam to roll down the other side and near the hole. I thought the 14th was the most important hole on the course, as it really "saves" the inward nine at a crucial stage.
The 11th has a little more to it than meets the eye (or so I tried to convince my comrades). The stream (that is out of bounds) is not terribly far off the left side of the green. For us the hole was on the right side, a difficult spot with a right-to-left wind. The 12th is hardly a throw-away, with the great views from the back tee, the prospect of cutting the corner from the tee, and one of the more interesting green complexes on the course (we had some fun recovery shots around that green). I can't write off the 13th completely, as the left-to-right slope of the green requires some thought with the approach.