When we were there a couple weeks ago the waitress at Tony's told me that free refills were not included on my Diet Coke. I told her that was fine and I would pay for it. In the end she did not bring a bill, I asked her for it and reminded her about the soda and she told me not to worry about it. We had less than the best service so I think she felt bad but in my experience free refills are not included at all TS and I think it is beneficial to ask or be prepared to pay just in case.