I just got home from this convention and my number one piece of advice would be to stay away from tables in the AMP building.
I am someone who rides the line of artist alley and dealers room because of the type of merch I sell. I bought a table at this convention towards the end and the only spots available were in the AMP building and not the main convention center. "They wouldn't put tables in an area that was bad so why not!" hahahahahahahahaha...
While I didn't do terribly I didn't do great either. I was on the lower level of the amp and it was freezing cold due to the ice rink where celebrity signatures were being done and unfortunately due to how they had traffic flowing most people were ushered away from where my table and a few others were.
From what I do know from a few friends I had in the actual dealers/artist alley room it was good up there. If I were local I wouldn't totally write off this convention. But I drive 22 hours to get to this convention and for me personally there are better ones for me to try in upcoming years on the same weekend. Plus it didn't help that I paid something like $475 for my table which was the same cost as tables not freezing cold and with better traffic in the regular dealers room. They also wouldn't let me move my table even though there were plenty of artist alley tables left empty from no shows.
The venue overall was pretty standard for a convention and staff was nice and helpful. I wouldn't go to this convention again unless I could get into the dealers room and was semi local.