Another cruise question

Yes we did Southampton New York and then traveled up the coast to Canada return in September about three years ago.
Can't remember any issues, it was a great trip which included New England and Maine.
We've traveled across the Atlantic a number of times it depends on where you are heading and the cruise ship.
We've had some rough seas at the Bay of Biscay but it's not always rough.
Just take travel sickness tablets with you or the ship will provide them if necessary free to passengers.
You'll have a wonderful time.