add a water enhancer (eg. Mio) to sparkling water that you've purchased at a restaurant? I rarely drink alcoholic beverages, try to stay away from pop and aren't very fond of juices. If it's available I'll get sparkling water. But because I drink so much "ordinary" water throughout the day, I like to add a flavour in order to better enjoy it with my meal. Is this acceptable at a restaurant, or is it considered gauche?