I've read most of the posts in this thread and it seems most have given you the 411 on weather/clothing needs. If you pack for a cool wet fall day in your home area, you'll be covered. Waterproof/breathable hooded jacket and a fleece jacket and/or fleece vest are all you'll need. I'd add a pair of rain pants to your day bag if you're doing anything outside for any duration. The weather can change by the minute. I forgot my rain pants for a whale watch excursion in Juneau, it started raining really hard, and I spent the rest of the excursion and a couple hours at Mendenhall Glacier in soaked jeans. The rain pants with side zips are much easier to get on/off. A fleece beanie and a light pair of gloves are never a bad thing.
If your concerns about outlets at the bedside are for a CPAP machine, give guest services a call and let them know your needs. It's a really common request that they're used to accommodating. The times I've sailed with my CPAP, they've provided an extension cord (if needed) and distilled water (for a charge). A couple other thoughts; get some gaffer tape. It holds almost as well as duct tape, but leaves no residue. Wrap 5-10 ft. of it around an old plastic gift card/credit card. It works great for taping down an extension cord if the need arrises. If your magnetic hooks slide down the vertical metal surface, put a small piece of gaffer tape on the wall/surface at the level you want the hook. It'll work like a curb/bumper and the magnet won't slide down over it.
Good choice on a Neptune Suite. We booked one for an anniversary cruise to Alaska and it was a wonderful treat. A suggestion for your photographer bride; make sure to be up on deck when steaming out of Skagway. The scenery is particularly breathtaking. Also, Eldred Rock Lighthouse is about 35 miles south of Skagway, and even leaving port at 8p, there may still be some backlighting as you steam by, depending on cloud conditions. Google it and take a look. Enjoy.
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