The only thing we have properly booked is a 4 nighter in mid June at the Teklanika Campground in Denali NP. Tek is harder to get in to - limited reservations and its past the limit where you're normally allowed to drive your personal vehicle. Only if camping for 3+ nights can you drive your vehicle and a camper back there. If not camping 3+ nights, you can only take the provided bus shuttle and tent camp. We have misfired 4 times so far trying to "properly" do Denali NP, so hopefully this is the trip where we put all the learning from our failures together to pull off what I've been hoping for.
Nothing else is truly booked yet, but we are moving from Alaska to Missouri and that will by itself involve quite the trip.