eating and drinking before you pay for it.... *edit*
For everyone that says it is like going to a restaurant, no It's not. When I go to a restaurant I don't go in the kitchen and eat around your food before you get it.
If you have a medical condition like blood sugar issues, being pregnant, or whatever I can understand.
If your child is throwing a fit because he/she is hungry, you should have either fed them first or pay for the snack then give it them.
I am aware that I don't know if everyone has paid for it or not, but if i see you walk into the store, grab something, open it and eat it. Then throw the wrapper away, I know you are stealing. The stores Here have sample stands set up for fruit so there is no reason for people to graze while eating.
In the hotter states I do understand getting a water, but a soda is not okay imo.