I have a feeling I know the answer to this, but is it considered rude to send adult children STD's to their parents home, knowing that they no longer live at home? For some family drama reason my fiance and I are clueless about, my FMIL does not want to ask a relative for her two daughter's addresses. She says they can just get the STDs when they go home to visit parents. Am I being a stickler for pushing to get addresses? There is no wavering about them being invited, despite this drama. I know STDs are less formal, but our wedding is in popular beach town and we are sending them to majority of guest list.