I attended every day of this year's Championship. I followed one group (Ryan Moore) for about 6 holes, and was able to do that only because it was very late in the day on Thursday. It was, to say the least, quite difficult. (Hands down worse than when I attended the 2012 US Open at the Olympic Club.)
This facility is great, though, if you're willing to find a seat with a good set of binoculars and just watch groups come through. But unfortunately, the USGA completely underestimated the demand for seating, so ridiculously long lines developed many hours too early on just about every hole. They better do better if there is a next time.