In laws turned up out the blue today with Easter eggs for dc. They wouldn't sit down, or stop for a cuppa. This was the first time they've been round since Christmas (they live a 10-minute drive away). We've asked them round several times but they're always "too busy" to come- eg on ds's birthday they were "too busy" to see him, but put a card through the letterbox. They wouldnt come round for a slice of birthday cake at a time of their choosing when they were less busy. Same on oh's birthday- card through the door, no interest in any interaction. At Christmas, they dropped gifts off a few days before, and didn't want to pop round to see dc open them on Christmas day ("too busy" cooking their dinner for 2).
I feel we've been ditched by them as we don't get on with sil. This goes back a long way but we've never had any issue with the inlaws, they just seem to be retreating further from us to avoid upsetting her.
I'm gutted that my kids (who used to be close to in laws) are missing out on this relationship. They make a token effort (ie by giving gifts) but avoid spending any time around us/dcs and give really shit excuses when we extend any invitations to them. I just wish they'd actually spend some time with dc instead of just chucking presents at them.