Serving Temperature and Glass
Too cold numbs, too warm turns clumsy. The right temperature depends on the cuvée type, and that is objective. The glass, by contrast, is a style choice.
Choose the cuvée type for the temperature and say what you want from the champagne. That leads to a glass shape, not a specific product.
Why no fixed glass
There is no single right glass, it is a matter of style and intent. Only one thing always holds: not the narrow flute, which chokes aroma and texture. #saynotoflutes