Two case studies from here in Georgia:
The club at which I play has greens that have been stressed, but survived nicely and are now well along in recovery following a little over a week of lower humidity and cooler nights. We don't close, even on Mondays, play was always heavy, and there were never temporary greens used. There were fans installed all over the place and the maintenance staff really hustled, but I'm sure there was no magic or anything unique in anything that they did in that regard.
Meanwhile, just a few miles away (less than 10 as the crow flies) is a Top 100 course that has lost some, if not all, of their greens. Their maintenance budget is far, far larger than my club's, I'm sure, and the amount of play far, far less.
The difference? Some of it is certainly luck, but IMO it is the speed that the membership expects the greens to be running on a normal day. Our membership is quite content with slower speeds at times of stress. My guess is that the courses who trademark themselves as have consistently fast greens may well be paying a very, very high price this summer, at least around here.