I have encouraged many couple to go on an Alaskan cruise. It was my first cruise and it was worth every penny we spent. On our 3rd cruise we used a rental car out of Skagway and had a blast doing and seeing what we wanted at our own pace. Right now we are thinking about going again. I would love to go again, but now we have some mobility concerns. We probably wouldn't be hiking on glaciers or taking long walks around the areas. A whale watch excursion would be doable, sometimes you can see whales and wildlife from the ship. I hope you go, as just the scenery is worth it.