DH, the dc's and I moved counties last June and now live about 4 hours drive, 6 hours train (as neither of us drive yet) away from most of our family. We never demanded that any of our family should be happy about it as it was our decision but did hope they'd be happy for us and at least be reasonable about it, which most are but PIL's, MIL especially, are still pressuring us to visit continuously and never seem satisfied with how much we can see them now.
So far we've been to see them for 2 separate weeks in the summer and they came to see us for one, then they came and stayed with us the whole of the autumn half term and we stayed with them for 5 days over Christmas, giving them near enough the entire Christmas holiday (only saw my family Christmas Eve of that week) and we're staying with them for 4 days over the Feb half term which, with the extra 2 travelling days is near enough the whole time. But MIL keeps saying we don't see them very much and going on about how hard it is for her and how they're such a close family that she feels she should get more time with us.
I understand she's probably still adjusting to having DH living so far away and she's entitled to feel however she feels but AIBU about the amount of time we're visiting them - DH and I feel we're spending at least as much time with them as most people who live a decent distance away do and that they're getting a fair deal, but MIL thinks we should be visiting a lot more and keeps saying we're not being very fair to her and FIL (doesn't help that we live nearer to my DM now so MIL thinks we're with her all the time even though we're not). DH is feeling increasingly guilt-tripped and wondering if she's right that people who live away from family usually visit more, so suggested I ask the assembled throng of MN, seeing as (in his words) "they seem more spot on than Google" (a high compliment).