I missed this before.

I would opt for the 24-70 ii on camera and 14 mm f2.8 in pouch.

Personally, I find even landscapes in Alaska to need some focal length to give some isolation. Wider focal lengths, the enormity of it all gets lost. Also, my favorite wide angle shots are typically anchored to something in the foreground. With Alaska from a cruise, much of your foreground will be water. Nothing to anchor the shot.

That isn't to say you won't need wide. Just what I shoot, I'd favor the 24-70 ii and only occasionally go wide.