I remember when I rode it for the first time, I expected to really feel the rotational aspect of the vehicle motion. Honestly, after the first second or two of the ride starting up, it was impossible to tell you were whirling around the room. It really just feels like you are moving forward, like taking off in an airplane.
The reason they tell you to keep looking forward is because the visuals make your brain believe that you're moving forward rather than in a circle in a centerfuge. I wouldn't eat too much before going on, just as a precaution, as I don't think the G's help most people's digestion - although I follow this basic rule of thumb for any good thrill ride.
They also pump some nice cold air on you, which I thought was nice. That's something that helps me on airplanes from getting airsick and feeling claustrophobic.
But, all in all, the ride is too good to pass up, and is atleast worth trying out at the risk of some slight woosiness afterward.