It is hard to say because the ship can either pull in straight or back in at different ports. We just got off the Western in early Aug and we had starboard.
In Port Canaveral we looked at the Carnival Pride out our window
In Key West we looked at the water, not the dock
In Cozumel we looked at water, not the dock
In Grand Cayman we anchor off shore so it really does not matter what side of the ship you are on. The view is about equal.
In CC we looked at the dock, not the beach.
I found it didn't really matter. There was always something to look at that was of interest.
Hope this helps a bit.
MJ