Coin shows of any size are something I rarely attend. Even then it is to meet collectors, speak (Woof! Woof!), or sign books. I don't buy coins to "collect" but for research, and there is never anything for research in the rows of flat cases and concrete floors. I've examined some very special and unusual/unexpected coins during shows, but only because the owner or agent had contacted me previously. On the flip side, if a collector or dealer/museum person wants in-person help, I've driven to Baltimore or possibly Pittsburgh sole for that purpose, then turned around and driven home.
It seems to boil down to my purposes and coin show purposes not aligning very well. Long ago I used to take coin photos at shows and used the time between customers to graze the bourse for SL quarters, WL halves and highest quality examples of type coins, but that got "old" quickly as the supply of unexamined coins diminished and dealers had piles of re-displayed retreads at show after show.
A few years ago I tried to interest show promoters/sponsors in revitalizing the whole event with organization changes, technology, communication, activity integration and so forth -- I shudda' brought along hearing aids for them.