Pretty broad subject....
But what I have come to expect from them (as an observer not a customer) is to be .... a typical cross section of people as a whole....
Have met some who are great to talk to.... share fishing information, offer advice, and are considerate of others...

Have had others run up on me, move in to less than 30 yds. , start whipping the water with rods or raise their drive, so the drive mounted trolling motor is splashing.... that all attracts the fish ... right, at least they tell their customers that.
Have even heard one tell his customers to cast as close to my boat as possible so maybe I would leave.....
Excuse ME..... I was here first.....

Then there are the ones that leave the cleaning station in such a mess that you can't help but spend 30 minutes cleaning up the area before you start on your own fish...
Straw