Lots of eating, game playing, story telling, walks, exploring and even one sail.
The trading was great and was often hilarious. And no one felt that anyone else hadn't done their share. Often others would pitch in when not assigned, just because they wanted to.
Most meals did have a main chef and a sous chef, which also worked out great.
We left lunches to individuals - go out or eat leftovers. And the general rule was that if it was in the kitchen, it belonged to everyone (unless marked as needed for a specific meal).
For the Thanksgiving meal, we put up one big board and people wrote what they were going to bring or cook. So you could look at the list and see what was needed. Those that chose not to cook were assigned to clean-up and this also worked really, really well, as we had some non-cooks.
Hope you try it out. It was the best thing I did to prepare for this family reunion.