If you are one of many who will be traveling to AK this season and are from the Lower 48, you do have the option to bring your fish back and smoke them yourself. The AK local boy is an expert with his smoker, and they really are not that hard to construct. Nor are the recipes that difficult, and the process is fun, plus you'll save several dollars per pound if you learn how to do this yourself.
The Internet is your friend on this one. Key-word searches of "smokehouse construction", "salmon smoke recipes", and "wood smoking chips" will bring you all the data you need if you decide to go for it.
Undoubtedly you are already excited about your trip. Building your own smoker ahead of time to celebrate that fantastic catch you are going to bring back will forever keep Alaska on your mind...