Courtesy of Uncle Sam's frequent relocation club, we made one trip (one way) from Elizabeth City, NC to Juneau AK in 1993 towing a PUP (4 weeks). DW was 3-4 months pregnant. In 1999, we made a one way return from Kodiak, AK to Oakland, CA, this time with a tent and 2 young kids (5 weeks). Have visited Alaska regualrly since, but not camping.
A printed copy of the Milepost is an absolute must. We had a copy of Woodall's for our camping info, but really not needed once we were past the Lower 48. You will spend much time off the communications grid.
In Northern BC, the Yukon, and Alaska, a different code applies. You will stop and help anybody that needs it - and they will stop and help you when you need it. Strangers are your friend, the environment is not (especially coastal BC and coastal AK). We had a transmission front seal leak, then reseal near Chicken Alaska (then population 32). We helped folks with lower 48 tires on their van conversion (8+ ply tires are the only tires that will survive on some Alasaka roads). One of our boat trailer tires lost its tread, and a Bearing Buddy departed on the rough roads. In all cases, strangers helped us, and we helped out total strangers.
Unless there is wind, lakes and ponds and wetlands mean mosquitoes. Alaska mosquitoes, AKA the state bird. Swarms of mosquitos. Laird Hot Springs (northern BC) and Triangle Lakes (central AK) are wonderful places to camp and enjoy yourself - until the wind dies at dawn and dusk. Even in Tok we had to give up the tent for a motel when the wind died, and the mosquito swarms began. Just a warning, hanging around the picnic table or the campfire clothed in mosquito netting is not as romantic as it seems. Watching a 3 or 5 year old get eaten alive the moment they stepped out of the tent is not our idea of fun (nor are the swatting parties inside the tent or car just from opening the door).
That said, those trips are lifetime memories and I would do them again in a heartbeat. The top of the world road from Dawson City to Chicken is incredible. Skagway is a special place to me - walking the town, driving the highway, and riding the train were all great. Another special (unfortunately occurs in late November/early December) is the gathering of eagles upstream from Haines.
Ride the ferries to Sitka and Ketchikan for the beauties of the rain forest. Juneau is another great place on the ferrry system. And Kodiak is a total change of pace and scenery from the rest of Alaska.
going: 1987 Coachmen PUP
1993 Ford Explorer
return: 1993 Ford Explorer (with 8 ply LT tires!) towing 14ft aluminum skiff
1998 Eureka 7x8 ft tent