I am playing (as you know) in the 5-day section, at least 5 of my friends from university will be participating too in the 5-day. It's expensive, I can afford it, still - I hope I do well!
Some members of my local chess club will be playing in the G/10 and G/5 tournaments that occur on the final two nights.
The current US champ Nakamura will be there also, I think for the 3-day (all sections merge, that is - 3, 4, 5, and 7-day sections).