Here's a view from Marriott Waikiki
My first time in Hawaii, I did 3 days in Waikiki and then did a 7 night cruise on the Pride of America. Because it's the only cruise ship that does a round trip around the Hawaii islands, it's a bit more expensive. However, if you have limited vacation time, a cruise is a great option to see multiple islands in a week.
https://www.ncl.com/ca/en/cruises/7-day ... OKOANWKHNL
If you have a bit more time, you can also look that longer cruises that start in Waikiki and ends in Vancouver like the Celebrity Solstice in April.
https://cruiseweb.com/cruise-lines/cele ... ahu-hawaii
While you don't get to stay along time on each island, there are some things you might not see on land, i.e.:
Napalii Coast (not my pic)
Possible active lava in the water: