Travel from Athens to Mykonos by ferry

Have seen this advice repeated many times over on the FB page I follow: BLUE STAR! The fast ferries have been described as “vomit comets” and are much more prone to cancellations for wind/weather reasons. If you are going a short distance, like from one island to another, maybe it’s not such a worry, but Mykonos to Athens is a longer stint. if you are picturing sitting outside or looking out the window at the lovely sea, that’s not possible on the high speed ferries.