I went there with my two daughters(10 and 8) tonight. When I asked for my bill. The waitress asked my daughter's age. my daughters replied. The waitress asked my old daughter to stand up, and told me they would charge her as an adult, because she is tall. I paid for my two daughters in full price because my two daughters have almost same height.
This is the first time my daughters were charged as adult, not only in restaurant, in every place we have been to. I asked my old daughter, how tall she is in her class. She told me she is one of the shortest students.
So, if you have a kid that is 8 and above, do not be surprised if they charge him/her as an adult.