John,
I was planning on playing Yale (I think I was going to aim for the Saturday) but if it's open on a Monday then that would make a lot of sense, and that would mean a chance to play somewhere like Westchester or Quaker Ridge instead on the Saturday.
The only issue would be it's a bit out of the way as the idea was to go Winged Foot - Yale - Fisher's Island and then on to The Hamptons, but being able to play Yale on a Monday means an extra day golfing so it's worth the drive / hassle. More than happy to do plenty of driving when the golf is worth it!
I really want to see Yale, not as much as Fisher's Island, but it looks like great fun.