I'm mostly used to BosWash Corridor cons - Philcon, Arisia, Darkover. We have 'dead dog' parties on sundays - sometimes into Mon :) Although FilkOntario (canada) had a Dead Penguin party. Arisia has Fannish Amoeba parties that ooze along the hallways and in dealers row at night. I haven't been to a con further down the coast than the late lamented Disclave and the furtehst west was a Marcon. The customs are different in different areas - anthropologists would be fascinated :) I once saw a Klingon, a Highlander and a Narn Riverdancing. Some sights never leave you shudder Lyrra