In case anyone cared.... I took a detour to Boulder to have lunch with a friend and didn't make it to the condo in Breck until just past 6. It was dark (got dark around 4:30 cuz of the tall ass mountains everywhere). The other 3 people had already gone to Keystone, so I just chilled in the room. Every one of us were feeling the affects from the altitude in way or another.
I would get short of breath if I had to walk up a hill or something, I also felt really sad for some reason.
The other three had minor altitude sickness from having skied and drank margaritas in the first 24 hrs of being at such high altitude. They felt nauseous and tired with headaches.
We were so beat from the long day that we all fell asleep before midnight instead of going anywhere. Probably better in the long run because we all felt pretty good the next morning and rode/skied from 8:30-4:00 the next few days.