I just looked at the scoring stats. Looks to me like the 82.6 average at Old Mac was for the women. I think the men's average in medal play was 76.
The 4 toughest holes there against par, in order starting with the hardest, were #10 (Bottle), #9 (Cape), #12 (Redan) and #11 (Road). The field averaged slightly more than 2 strokes over par on those 4 holes alone. i.e. each was almost a perfect half par, from the hard side.
Of the par 3s, the Biarritz was easily the toughest, at 3.523. The field averaged nearly 1.5 strokes over par on the par 3s. The number in parentheses gives the rank of the hole in difficulty.
#2 Eden: 3.439 (6)
#5 Short: 3.194 (12)
#8 Biarritz 3.297 (10)
#12 Redan 3.523 (3)
Only one hole - #15 Westward Ho, par 5 - played under par that day, and then just barely, at 4.961.
At Bandon Trails, #3 (a par 4) averaged 5.205. #2, a par 3, averaged 3.923, and #1 averaged 4.538. Brutal start to that round. Also, the shortest hole on the course, #5 listed at 126 yards, averaged 3.603.