A major tour operator markets 'free child places' in their brochures for virtually all their hotels.
It turns out the tour operator offers between one and three free child places for each hotel per 'stay'.
So, for the average 250 room hotel, an optimistic number of 5 families (considering the overlap of holiday dates) will have benefitted from a 'free child place'.
'Free child places for 2% of customers' doesn't sound quite so appealing, does it?