Last year I rolled into the lineup at exactly 4:20 Thursday afternoon. Tent was set up right at 111 and Main by 5:30. It was a great spot about a 2 minute walk to the entrance. Close to buffet and the general store and showers. If you go to the showers 5 minutes before they open in the morning, 8am I think, you'll never have to wait more than 10 minutes or so.