There are options to the big ships with tons of people aboard Bill.
Smaller ships doing out of the ordinary routes will offer some interesting choices.
The Linbad Explorer is one company that I know of with this sort of offerings.
https://www.expeditions.com/
Tho more costly, this sort of trips do away with a lot of the issues I have with the larger ships. Like arriving in small ports with more people disembarking than live in the place being visited. And traveling with 1,500 fellow passengers.
I did a cruise and did enjoy the trip to the Caribbean. But think a small ship cruise of the inside passage to Alaska would be a good choice for another cruise. Especially if being sea sick is a consideration. That route is mostly in sheltered waters.
I'd want an outside cabin with a view of the passing scenery. Some ships have small lanai for the outside cabins, that's where I'd want to be.
Bob (lake Cle Elum). recently did a cruise of French Polynesia that sounded pretty cool.
An Internet search may turn up some trip that are a better fit for you than the more common large ship packages.
I hope you find something that you like.
Cheers Richard