For those of you who don't know what a Bambinocino is, it is essentially an espresso cup filled with cappucino froth - or put another way, a cappucino without any coffee.
I heard somewhere that coffee makes a great margin for restaurants as it is relatively cheap to make and serve. But most often, when eating out with small children, after dinner coffees are sacrificed in order to make a quick getaway before the children, having finished their food, start to get bored. A free Bambinocino keeps the children happy whilst their parents enjoy the high margin coffee - and would could be better for a small child than drinking an after dinner "coffee", just like their parents do!?