DH's sister, BIL and 3 DNs live abroad. I always make sure I send them presents for birthdays and Christmas and put quite a bit of thought into getting something that I hope they'll like. I never get an acknowledgement that the presents have arrived or been opened so leave it for a few weeks and then ask, to which the answer is always, "Oh yes, thankyou, they did." I'm starting to feel a bit hacked off really. IMO it's good manners to acknowledge the receipt of a present and it would be lovely to have a photo of them opening/playing with it, or at least something to say that the recipient actually liked the present. AIBU to think the ILs are being rude?