Letter by Frances Marx: Glimmerglass ensures customer satisfaction despite snafu I’ve been visiting your area and going to the opera for more than 20 years. This year it was Friday, Aug. 12, and we were leaving from Rochester and anticipating Mozart’s “Magic Flute” at The Glimmerglass Festival. I rejoiced that I had remembered to look on the back of my calendar for the envelope holding the tickets I had ordered about a month before. WHAT A SHOCK! No such luck…