I don't use a laptop or the sheet music holder and anyone who cares to come take a look at my fingers is welcome. Most of my jobs, however are on stages where they can't see the keys anyway.
At small dinner parties where there is not stage, I may angle the keyboard at a 45 which creates a little more intimacy with the guests.
As Gary and DNJ have always said, larger parties just want to be entertained and don't really care how you do it.
Eddie