Although I’ll use those in a pinch, when it’s hot (almost all the time in FL…), I prefer ice water.
We just got back and had no problem getting cups of ice water at any QS location. We found it easiest/quickest to ask at the mobile order pickup window. They only give small cups, so we asked for 3-4, which they were happy to give us. We refilled our insulated water bottle all day long.