I am at the age where my grandkids are graduating from college and are getting married. When that happens and they send me an invitation I respond with a wedding and/or graduation gift because that is the expected polite thing to do. In turn I expect a thank you card or at least an acknowledgment that they received my gift. I guess that is no longer the Custom these days because so far I have given four gifts and received absolutely no acknowledgment that they even receive them. Maybe that is no longer the polite thing to do or the customary thing to do and I have missed getting the memo. none of the other family members have received acknowledgment so it is just not me. I read somewhere that courtesy is the lubrication that allows society to function smoothly. I have two grandkids left that are of age to get married, but haven’t so I’m not sure how I’m going to react.