The line starts OUTSIDE the FRONT of the convention center with the regular line to go in.
Once they let people inside (should be the door down towards the end around E or F), you go up the escalators.
After the escalators, you walk down the hallway - it should be somewhat roped off past a few food carts, etc.
If you go to the RIGHT, you'll enter Sails.
If you LOOK to your LEFT, you'll see Ballroom 20. The LINE for 20 starts by going OUTSIDE through the double doors and weaving under all the white tents that have been set up. The water/marina will be downstairs to your right.
The line weaves under all the tents back INSIDE the convention center along the windows/doors back towards where you came from. The line is mostly against the windows until you get near the front where they have set up some barriers and you're in a more traditional looking line w/ the plastic chains to divide the rows.
When it is time to enter the ballroom, they'll block off traffic in both directions and let you in.
The END of the BR20 line can actually extend down the steps towards the water (hence why it looks like the line may have started somewhere else).
There is no line INSIDE the convention center BEFORE doors open for the day.
(just using caps for clarity)
