Originally Posted by Velella
Any advice on things that should be done before we leave besides making sure we have very good lines would also be greatly appreciated. Thank you.
You did not mention the proximity (latitude) of where the boat will be docked, or if you have gas or diesel tanks on board. If you do, you may want to consider filling them (allowing for expansion) to minimize condensation, and if appropriate a fuel stabilizer or algae growth inhibitor.
Disconnect the ground cable on each of your battery system. Fill and charge them. It would do them good to be on a trickle charger, solar or otherwise. Or have somebody charge them about once a month for you.
Other things to think about
Protection against rust, corrosion, and sun.
The potential of rodents or insects coming aboard via the dock lines.
The lodge in Alaska looks very inviting.
Have fun, good luck, and check in when you have the time and let us know how it is going up there, on the "Poop Deck' forum.