You shouldn't exclude your parents from your life.
Mary is going to get married, but she's worried that her parents will embarrass her at the wedding.
Mary wants to host a trouble free wedding.
Mary tells her parents that they can attend the wedding if they promise to behave.
Mary tells her parents that they can't come to the wedding.
Mary's parents promise Mary that they will be on their best behavior.
Mary's parents are sad that they can't participate in the wedding festivities.