We have taken the Hawaii cruise roundtrip five times. The weather and seas
have been different on each occasion, but its better to be prepared. Rough
seas are not as bad, at least for me, than rolling ones they seem to bother
me the most. Our trip last October to Hawaii was relatively calm just a few
days that we considered uncomfortable.
You'll enjoy the Summit a truly wonderful ship with lots of amenities and
terrific food. Enjoy to outside elevators too....