I think it is super important to make sure you capture the grandparents with your family too. They play such an important part in our children's lives (as well as our own obviously). Sometimes it can take a bit of persuasion to get the grandies in photos but it'll be worth it. You'll all love them and they will become more and more valuable as the years pass by.
This also applies to getting the in-laws and cuzzies together too. Each have their own unique relationship and bond, sometimes a closer bond than siblings (well, they don't have to live with each other all the time do they).
So, it's always fun to do a session with a big family group, just like with these guys....
Dunedin Family Photographer