When I left home, I had plans for the first 4 days, including camping reservations. After that, I winged it for 4 weeks. It was mostly camping, with a hotel night thrown in about every fourth evening. I also had some stays with family, which was nice.
Overall, I had no issues with the van, or any of the sub-systems in the van. Going on a handful of shorter camping trips during the summer helped to refine the experience. Most importantly, adding an additional mattress topper made getting a good night of sleep easy, no matter the temperature - which ranged from 37 to 100 degrees.
Here’s my list of things:
The DC to DC battery charger worked even better than expected. I can easily go 3 days on battery power and fully charge in under an hour while driving.
While my cooler worked well, especially with ice blocks, I am tempted now to try a 12V cooler to replace the melted ice for foods. Having a secondary cooler with ice for drinks is still OK.
While my attachable awning works well, I think for next year having a rack mounted awning that is quick to deploy would be better and worth the investment - likely in the $1500 range. I would have used it every single day.
I’m starting to research both heating and cooling solutions that can operate on a 12V system. I might need to add a dedicated deep cell battery, but it might be worth it, especially for a Texas trip.
The National Park Pass is an awesome value, especially for retirement age people. I did not realize until I was underway that there is also a nice discount on the recreation.gov reservation system for NPS pass holders. $15 per night at many sites is a great deal.
The quality of state parks is all over the map. I think some of this is just dumb luck - like timing a visit at a park that was fully rebuilt recently. I happen to stay at a couple state parks where all of the facilities were brand new (newly rebuilt). I just need to figure out how to find those in advance.