I was in a game like that once. We were told we were all part of an established adventuring company and had already worked out our personal differences. Despite having this long history with each other, we didn't know anyone else's name until 4 hours into the first session. We didn't find out that the wizard was female until the second session. I was playing a cannibal. When I stripped and consumed our fallen enemy, one of the other players started to protest, and then shrugged it off since we'd already apparently worked out this issue. I didn't stick with that game long.