I’m off to a good start with the transition away from building a camper van to using a camper van. I’ve had camping trips 3 consecutive weeks and feel like each trip has been a bit more organized. Here are some notes from my recent trips:

Good news on the fuel economy front. I’ve been right at 22mpg. With that figure, the range is about 450 miles. I think that number would drop if I were on a faster interstate trip (going 75mph). The fuel economy wheelhouse for this vehicle is closer to 60mph. That suits my route making anyhow.
I’ve adjusted the “stuff” I’ve packed to include a nicer camp chair. My compact moto-camping chair is still packed, but a more upright proper chair is nice to have.
Bringing a bicycle is a nice addition. Especially at the larger state parks or for using bike trails, this adds a nice dimension. My van does not have a towing hitch, so potentially adding a hitch and bike rack would make sense. For now, the bike fits inside just fine.
I can see why many vans have the easy to deploy wind/rain shade on the passenger side. My roof rack mounted Kelty awning works well, but does take about 15 minutes to set up or take down. And it is tent-like, so putting it away wet has all the problems of tents - with mildew lurking if not dryed properly. A permanently mounted rack would be nice to have. Here is an example from Thule Racks. The Kelty awning was $110. So if I feel like spending 10X for the convenience…well…not yet.
My water and sink setup works well, but for longer trips, it would be nice to have an external (under van) gray water system and water filtering for keeping the drinking water safe. Generally, I am going to be OK if I have enough bottled water to drink and make coffee. Pretty simple at a state park. If I am at a DNR or more remote campsite, I’d need to upgrade or just bring a couple 2-1/2 gallon jugs. Running out of (fresh) water or getting sick because of spoilage is not really acceptable,
Each of the first three trips included Lake Huron or Lake Michigan beaches, which means sand. Lots of sand. Sand everywhere. Having a little vacuum in the van would be nice.
My battery storage system is working nicely. Running the roof fan full time and charging stuff, I am using around 20% of capacity per day. Realistically, there is enough power to go three, possibly four days without recharging. I haven’t had a chance to test the solar panels yet. The plug-in charging at a state park only takes about 20 minutes to get back to 100%.