And, i'm curious about how much wider the fairways are for regular member play?
About 12.5 - 20%, depending on the hole; in some cases (like #15) the fairway may only be a little wider for members, but was mowed/moved over 5-10% in the Hanse treatment, and thus plays narrower than even Open mowing lines.
And of course, the rough (very often a birds nest for members too) is uniformly higher, making whatever effect of narrowness more profound.
***Interesting and telling that Spieth's ball was lost on #2 yesterday morning; with no spectators and many fewer marshals, it went right down in that grass between #2W and #7E, where many a member tournament has been held up searching. Shows how tough that stuff can be...JUST to find it.****