I'd say, see who's going where and if they got to a feature FIRST, let them get through unless you know you won't get in the way. I was trying to learn the half pipe and these tiny kids on skiis pop outta nowhere from behind be when I already went in. Needless to say that killed my run 'cuz I wasn't about to clean children off my board.
Another funny story was- if a midstation of a lift has a very low clearance, don't loiter in there. Me and my buddy were going to the top of the mountain and this dumb blonde was chilling right under the lift path. My friend didn't notice her and his hanging board taught her head a nice lesson lol.