Tim Bert,
John Kirk has the grasses at Bandon right, I think.
The grassing scheme for Bandon Dunes was a large committee decision -- test plots, turf professors, seed salesmen, etc. -- and they decided on a hybrid of fescue and Colonial bent. Some thought pure fescue was unsustainable long term, others that it would all be Poa annua in five years anyway.
We suggested a blend of fine fescues for Pacific Dunes, without the Colonial; but the first course was so highly praised at that point that we did not fight for it too hard. We thought it might all be Poa annua by now, if they got it wrong, but mostly, we didn't want the job to start with an argument.
I believe that Bandon Trails started out with a little bit of Colonial bent in the mix, or at least they said they were going to, but that Ken Nice eventually planted at least some of the greens to 100% fescue knowing that he could always add the Colonial later. Everyone liked how those turned out, and that they didn't have to spray the fescue for take all patch which was a problem with the Colonial. So, Old Macdonald is grasses to 100% fescue.
Ballyneal is NOT 100% fescue according to Dave Wilber's specs, but the fescue dominates the mix because they keep it lean and dry.
And yes, I did notice the creeping bent making it harder to putt from off the green at Kingsley a couple of times ... Luckily more for my opponents (who don't know to look for that stuff) than for me.