I agree with Tieguy that favoritism, or even the appearance of it, is something that must be avoided. It is best, in my opinion, to keep limits on the amount of friendship and fraternization that occurs between mgmnt and hourly.
We do group activites with my employees, we go bowling, go play pool something like once a month. everyones invited not everyone comes about 2/3 rotate when they come we always have fun