I have direct knowledge of the conditions and services you can expect on the Alaska portion. I have been to the villages along the Arctic Ocean many times.
The villages do not have facilities for large boats. Yes, barges pull in there, but they are special barges designed for beach landings.
There is no marine fuel. If you need fuel you are going to either get very close to shore, which is hard since the water depth is very shallow, or you are going to have to tote your fuel.
If you want to go ashore, you could take your skiff, as there is generally the ability to get a skiff ashore. Sometimes this will be a beach landing. More often there is a creek or river or sand bar you can pull behind and get your skiff ashore.
The villages are small. Very small stores, and very expensive. Remember this is a wilderness. Everything gets flown in.
The people are great. I have lived amongst the native population, in their villages and their homes for years while at work. For the most part they are very friendly, and helpful, and willing to tell their stories. They have had a hard life. The arctic slope villages are not easy places to live.
My favorite village is Kaktovik Alaska. White people call it Barter Island. Go there and you'll likely see Polar Bears.
I have been 10 feet from a polar bear (I was inside my truck). I have stood in a herd of thousands of caribou. Right next to them, smelling their smells, and hearing the clicking sound they make when they walk. I have seen birds rarely seen, and watched Arctic Foxes hunt their prey. This is a place like no other.