We went from Vancouver to the Islands. We really enjoyed the sea days. As for the right side of the ship when you are at sea you see the same thing on either side. While at the Islands that I can't be sure about. Going on the Spirit in a couple of weeks. Can't wait.
We sailed that route in April of 02...but not on Carnival (wished afterwards it had been Carnival though as we got a bit bored on some of those 5 sea days.)
You need to be aware on those sea days that only one day will have really warm air outside....then it gets pretty cold. I think a good number of people were still on the deck for half the second day but then only the die hards managed for any length of time.
The air temperature is really cold because the water temperatures are as well.
Vancouver was beautiful that time of the year!
Try to fit in a helicopter ride over one of the islands...I hear they are great anywhere.
We did Kauai and Oh my....we had loved the island from the ground before but it was even better from the sky! If you need the name of the company...email me.