I attended on Saturday with my son and was there for about 10 hours and saw the following cool things:
Dustin Johnson outdrove playing partners Matt Kuchar and Nick Watney by about 30 to 50 yards on the long par 4's we saw. We were near the Golf Channel's Steve Sands who was walking with the group and he told us the distances were 334 on the 13th hold and 340 on 14. When Johnson walked up to his shot on 13 he greeted Sands with a "Hey Sandy" and a fist bump, which I thought was cool.
On the 451 yard Par 4 13th, about half the players we watched (4 or 5 groups) used a sand wedge for their approach shot.
On that same hole, Camillo Villegas hit his tee shot well right, hit the cart path and bounded way forward behind some trees. We stood about 5 feet away while he and his caddie figured out what to do, at which time I got a close up look at his bag, which contioned driver, 3wd, 5wd, 4 Hybrid and 7 Hybird. I was very surprised to see that, figuring as one of the longer hitters he'd be playing long irons. Anyway, he ended up hitting a wedge through the trees about 5 feet off the ground, but not before instructing his caddie to "Get that big fat guy out the way" (who was a hefty photographer).
Also spent a lot of time behind Jason Day and Tommy Gainey on the range. Day was amazing to see up close, hitting it considerably higher than the few guys next to him, 99% the identical high slight draw. Gainey, on the other hand, hit it much lower, with a lot more variation, but he did seem to have the most crowd support.
Few other comments:
Ryan Palmer was chatting up the gallery and seemed in a good mood, as did Jerry Kelly and Nick Whatney, who fist bumped some guy in the gallery next to us. Adam Scott and Stevie ignored every comment (and there were a lot of them) and kept walking, as did DJ.
Saw Roger Maltbie being driven around in a golf cart while puffing away on a cigarette, not quite the same treatment for Mark Rolfing and Steve Sands, who hoofed it all over the place on a day that was much hotter than we expected.
DJ's drive on 18 was amazing, miles past anyone else we saw, flying it to the second section of fairway and ending up with a short or mid iron to the Par 5 when everyone else was hitting long irons and hybrids (or woods) and almost no one else could hold the green.