They have bottles of water in MacDonalds.
In fact my kids drink water all the time at home and at MacDonalds usually have fizzy or juice for a change. However, when I'm sat there being good with my one little bottle of water while their all tucking in. They one at a time keep asking me for some of my water. Makes me laugh but as my middle son says only water is good enough when you are really thirsty!
Good boy!
Dizzy x