Anthony asked, "Is the set up for the day to day player different than for the Open? How much more difficult is the Open set up than what they usually have for the public?"
MUCH MORE DIFFICULT for the Open.
Consider tee locations. Although many make attempts to play from "the tips" they only really play from the tee markers in place on the back tee pads. Rarely, if ever, are any set as far back as they will be in the Open.
Rough. The rough is never as intense for day-to-day play as it is during the Open. Since the course closed for play on the last day of play that grass has done nothing but grow and it wasn't cut for a number of days before that. It will be "graduated" this week.
Green Speed. The day-to-day player will almost never see the Black above 9. And yes, there are a great many small undulations that come into play when the speeds get above that. 13.5 to 14.5... They will have to add a lot of water to keep them that slow if Craig Currier treats them as he did in 2002 when they were at 15++ on the weekend.
How did the players view the idea of "flat greens" on the Black? Here are just a FEW comments, one especially that I beleiev you'll find interesting:
“Whoever said these are flat greens is crazy. Maybe they're flat for New York, but they're sure not flat for Texas.” Bob Estes
“The greens are flat and generous in size, but that doesn't mean it makes it any easier.” Mark O’Meara
“The greens are pretty severe…” Tiger Woods
“Well, they call them flat, but I haven't had a straight putt yet. They are very slippery, and they have got such a good surface on them. Plus, we haven't been here before to read them.” Nick Faldo
“I think somehow, somebody wrote that they were easy and they were flat, and they are not… You know, there are some greens that are flat, but they are flat on top and they might roll off, like roll off the back or roll off the side or have a false front. But the 11th green is severely tilted; 12th green is severely tilted. There's just a lot of them. One green has a false front and then it's fairly flat, but even the flat ones, are punch-bowly, where you can put the pin up towards the side of the green and you are starting to come up the side of the slope and you chip up the short-side, it's going to roll past the hole. If you put the pin in the middle of the green, there's probably four or five greens that you can call flat, but if you put them on the edges, none of them are flat. You always see a few bombs, but they are going to be so fast that -- they are Augusta speed right now, so they are tough to putt already… I mean, the 15th green is the most severe green I've ever played in the United States. It's more severe than anything at Augusta.” Davis Love III