DEAR ABBY: My friend “Nan” is planning her wedding and asked if I, along with our friends, would be bridesmaids. Fast-forward a few months: The bride-to-be is now pregnant. We’re having our first get-together as a bridal party, and she wants us to serve only nonalcoholic “mocktails” for our girls’ night in. I asked the maid of honor if we could have the option of alcohol, and she said no because t…