Last year I was there a 10 on the first day and all the tables were gone.
What time this year I wonder will I have to go
If you go on the first day, you should go between 7am and 8am if you want a table
indoors, depending on the tent you want to get into. You'll have to wait a couple hours, too, before the tents open. I've done it that way the last couple of years, and plan on being there on the first day again this year.