dinner invitation to mom and dad's on minor holiday
A week and a half in advance, I asked my son and daughter in law to come for dinner on a minor holiday. My son said he had asked his uncle to visit and gave him three possible days (one of which was the day I asked my son to visit us). I felt that my son should tell his uncle that that date wasnt open anymore. He still had two dates to pick from. My son said he thought that wasnt proper etiquette. Who is right?