One thing I can never get over is the poor hygiene I've encountered at conventions.
I've never been to a Trek convention, but I can rank (ha ha get it?) the types of conventions I've been to by their "funk factor":
Sex conventions: Not funky (everything smells like something, but not BO)
Comic book conventions (e.g. New York Comic Con): Not very funky
Anime conventions: Somewhat funky
Tabletop gaming conventions: Rather funky
Video game conventions: Maximum funk
This is in spite of convention programs almost always saying that you should shower every day. That they even have to mention this makes me go
Seriously, people. Bathe.
I was at a gaming convention once where they had these little containers of deodorizer. They just sat on each table, supposedly absorbing the stink. The room still
smelled bad. I was only able to stand a few minutes of it. Gross.