Again, how long do you have all together? If only a week, then a round-trip cruise ex-SEA or YVR is about all you'll manage if you want any cruise experience at all.

If you have more than a week, and just want to limit your time on the water, then a one-way cruise, probably northbound, from Vancouver to Seward (120 mi from Anchorage) is probably your best bet, followed by at least a week car-touring in southcentral AK. In late May, some things won't likely be open yet - the interior of Denali Park may or may not, for instance. OTOH the roads will be empty of too many tourists, the rivers will be high, snow and glacier viewing great, and with long daylight hours you can see a lot in a short time.

But on the water, it's breezy (as the ship moves, duh), the ocean temp. is cold, there are glaciers and snowfields cooling the air as it comes down to the water. In short, it's no Antigua. But there are also whales, eagles, critters on the shore, plenty to see.