DEAR MISS MANNERS: I am at a loss as to how to confront the use of cellphones while at a restaurant with my granddaughter and her boyfriend. It seems so rude for them to sit and use their phones while we are supposedly having a meal together — and, I might add, I always pick up the tab. I finally popped my cork and said, “Surely you can visit without the phone for just a bit.” Was I unduly rude? GENTLE READER: If we want to guard against corks being popped, you might want to set the ground rules first. For example: “Let us enjoy each other’s company while we’re here, and then you can attend t…
