
I think that once you pass the GUlf stream you are ok..SO on the first night you do seem to feel the waters a bit more..After that, they are calmer..(most of the time..

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We have done three easterns, and the only rought one, was last September with Jeanne..And we will not go there...
You could be prepared by having some motion sickness meds before you go..Our family did not need them, but we were of the very few who did not last September..Better to be safe..