My vote for worst manners and personality types is Danbury, Connecticut! Maybe it's just because I'm a southerner who's not used to Northern character, but
man, the FBO managers/owners and Grade-A @ssholes up there. I actually got bitched out by one owner just as I shook his hand for the first time and handed him a check for my first months rent for tie-down fees!

The more polite you are with the guys at KDXR, the less respect they afforded you. Two different FBO's I dealt with, and both were managed by gutter-mouthed gangster wannabe types. After years of frequenting airports all across the south, I found the culture shock absolutely unbelievable.
Luckily, I ran into the resident air traffic controller who was extremely accommodating and laid back, and he was able to smooth out the bumps for the buisness I had there. Come to find out, he was from my hometown of Longview, Texas!

Go figure.
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Rob Mears
'Surviving Corsairs' Historian
robcmears@yahoo.comhttp://www.robmears.com