DEAR MISS MANNERS: I would like to know the most polite way to request water with no ice at a restaurant. The most common experience for me is that the waitstaff will come to the table, pitcher in hand, and immediately pour water (with ice) for everyone. I know he or she is trying to be accommodating, but most often, I prefer no ice. Sometimes I would like sparkling water, if they have it. When there is a glass of ice water already poured for me, should I just accept it, or should I say something? I have spoken up in the past, but I feel like a difficult patron. GENTLE READER: One of the few u…