As stated in the promotion thread, the drinks are generally not being offered for free by FA's, but are given when you request a drink (though Chicken's are mentioning it). Of course, of the two flights since the promotion began when I was sitting in E+, one I didn't feel like getting a beverage, and the second, I got it for free, but the FA apparently didn't know about the beverage deal. We left a bit late, and she was serving first too, so said she didn't mind giving it to me at no cost. Too bad I am flying next tomorrow, the first date on which the promo is over.