Isn’t there some OSHA requirement about cold water available for outdoor work? I seem to have something about that in the back of my mind. Anyway a few bucks a day or getting another ice maker for ice is cheaper than the impromptu breaks or moving a little slower guys would need from being overheated and under hydrated. As far as what the guys think about ice, what they did in response to not having an ice maker tells you all you need to know. I think you know what happens if you take that away. As some further advice, sometimes the big picture far outweighs the laser focus on every nickel and dime. To be successful, you need to see both.