Kids can be invaluable
Many stores dissuade hordes of children from entering for fear of pilfering... but just look at the queues coming all the way outside of this Subway. Many kids have got cash and they are happy to spend it for choice, quality and quantity.

him! interviewed 2,500 customers at food-to-go chains and found that when kids are involved, ‘cheap prices’ are actually slightly less of a consideration compared with other things. Want to know what’s important to different customer types when it comes to food-to-go? Contact your him! account manager.
Source: Food-to-go Tracking Programme – shopper interviews at Subway, Greggs, coffee chains, c-stores, forecourts, Boots & WHSmiths