Mark Hamill will be there on the 6th. All other things being equal I would think 6/1 would be less crowded.
OTOH, I'm there on the weekend of the 6th (setup long before Mark Hamill was scheduled figuring that'd be a lighter weekend.

) and planning on going on the 6th figuring that will be the lightest of the 3 days that weekend. Maybe. I hope.