The Guardians of the Galaxy: Cosmic Rewind coaster at EPCOT is notorious for causing significant motion sickness, even in people who are normally fine on traditional roller coasters. This is because the ride utilizes an "Omnicoaster" system where the ride vehicles rotate 360 degrees to point you toward specific screens and action while the train is moving at high speed. This disconnect between what your eyes see (rotating screens) and what your inner ear feels (high-speed lateral movement) is a major trigger for nausea and vertigo. Frequent riders report that Row 9 (the back row) is the worst for motion sickness because it experiences the most intense whip-action and rotation. If you are prone to queasiness, it is recommended to request Row 1 or 2, which provides a clearer view of the track ahead and reduces disorientation. Many guests find that taking an anti-nausea medication like Dramamine or wearing a "relief band" at least 30 minutes before riding makes the experience manageable. However, if you are highly sensitive to spinning or simulator-style movement, this may be one attraction to skip.