You will wait in line to get inside to just wait in line again. Make sure you wear comfortable shoes and if you have something heavy, bring a dolly! I saw people moving furniture forward on a line each time it advanced (hard!) Each different item has a different line - so if you have 4 pieces of furniture you can just wait on the furniture line. If you have a painting, a piece of glass and two pieces of furniture like we did - that's another three lines.
Below is a shot of the preliminary line - the one you wait on so you can get to the other lines inside!
If you're going - don't bring a painting. I think I'm allowed to give that advice after waiting four hours in the painting line. ;)
We also discovered that there's a formula to get filmed for a segment. Don't expect your item valued at $12,000 on a bad day to who knows what on a good day and with more research (like our little overturned table there) to get on TV. The pattern is apparently: an early American table, an old grandfather clock, a piece of Art Nouveau glass, a Civil War era gun and yet another Nakashima dining table for every episode. ;p We really did have a good time!