First Timers in the Arctic, What Cabin?

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We are looking at booking the National Geographic Resolution, July 2024.  I do not know what cabin to book.  We will be going from Greenland to Nome, Alaska.  Are the seas rough in late July?  If so, we want to do low mid-ship.   Will we be able to enjoy a balcony, or would it be too cold?  Will it matter if we are port or starboard? We've enjoyed suites for the extra room and perks, but I haven't been able to determine if there are extra perks with a suite. Your advice and suggestions would be greatly appreciated as this isn't the Caribbean or South Pacific and I am truly lost in figuring this out.