Cameo,
we have always had verandahs when sailing, but . . . . . . I too agree with the previous post that says placement on the ship is important too - mid ship for less rocking and rolling; although I have been lucky to not get seasick, did feel a bit queasy once in 18 foot seas - but crackers and a nap helped a lot!
don't let the fear of 'what if' spoil your plans - you will have so much to see and do it will definitely keep your mind occupied; the verandah will be a lovely escape and a great perch to people watch from if docked on that side!
MamaQuack