Height-ist?

We're used to the idea that you can be too small to go on some rides at fairs and in theme parks - it's a constant source of annoyance to my 12-year-old granddaughter, who is a bit of a titch and is therefore barred from some attractions she would like to go on. But now comes a story of a restaurant in Gloucester, where you only qualify for the discounted kids' meal prices if you are under a certain height. My granddaughter is all for going and filling her face!