I don't drink alchohol, but I tip the same as if I did (for good service)

Once at a beach hotel bar I ordered a Ting and then asked for water and was informed that I "couldn't fly on water here". Uum, I beg your pardon, but as a guest of the hotel I think I can "fly" on just about whatever I like. Needless to say, no further tip, and no further business. Countless trips later, they just watch me walk on by....