I think the first time you play a great course the round tends to blur together because it is a new experience and you are trying to absorb the full gamut of stimulae over a short period of time.
Thus, on the first go round, emotion tends to play a larger factor in the evaluation. The full experience also becomes more important. The weather, attitude of playing companions, first thoughts upon arriving at the course, how well you played, etc.
For this reason, it is almost unfair to judge a course after only one round.
When I played Ballybunion and Lahinch, my experience at the latter was much more enjoyable than the former. I played better at Lahinch, the weather was nicer, it was just an amazing day. BB was a bit of a slog due to the weather and I had a tough time figuring out exactly where we should be hitting bc none of us sacked up and got a caddy. It ended up being a bit of a let down although it was spectacular.
I wish I had played 36 at each instead of only 18 . . . and had a caddy.