I love every single bit of your plan and can relate so much to your family dynamic. My ODD and DH are so much like that I was laughing so hard and nodding as I read your Sunday morning plan. Pretty sure I could copy/paste for my Monday morning plan!
I also love your prioritization and expectation setting. I'm definitely doing that with my kiddos. DH is the kind of partner who has pretty much zero interest in the pre-planning. I know he appreciates things when they go well even when issues come up(like the year I had everything planned out so well for the group that even though I was too sick to do the park one day, they had a great time following my directions), and he has a great time in the parks once we are there. His ideal vacation is definitely more a sit by the pool/beach/fire/anywhere you can reasonably sit for an entire day and chill. The downside is, when I ask him what his 'must do' things are, he's non-specific - 'whatever makes you happy dear' and 'anything that puts a smile on the kids' faces'. Lovely sentiments, but so unhelpful while planning
I can't wait to see how things go for you guys! I know you will have fun! Our trips are overlapping (11-15th for us). If we make it to a rope drop maybe we'll see your group