I'll expand on the real difference between Mission: SPACE Green Team Less Intense Training and Orange Team More Intense Training. The ride is setup as a pod with 4 passengers, each hanging from an arm of a large centrifuge, and each pod can be tilted to the sides and swung inward and outward, though not at a very steep angle. The Green Team and Orange Team pods are identical.
On Orange Team, the centrifuge will activate to simulate g-forces. It does this three times during the ride only for about 10 to 15 seconds at a time. The idea is for you to feel the extra g-forces (think of a "Gravitron" ride at a carnival), then when they subside, you feel lighter, thus simulating weightlessness (it's just perception of course). Again, this only happens during 3 sequences (launch, lunar insertion, entering Mars atmosphere) for a total of less than a minute of sustained extra G forces. According to Wikipedia, it is a maximum of 2.5 Gs.
On Green Team, everything is exactly the same except there will be no spinning. They do tilt you back into your seat so you get a little feeling of being on your back (like when the rocket is upright for launch). This of course takes place at 1 G, the norm for everybody all the time.
If spinning bothers you, remember that you are fully enclosed and cannot really tell you are spinning. All you feel is like you are being pressed into your seat and your arms will feel heavier as you try to work the controls. However, if you look to the sides, this can really mess with your equilibrium and cause motion sickness. It is best to keep your eyes locked on your monitor. This is not a concern on Green Team.
The bigger issue is claustrophobia, and it apples to both Green Team and Orange Team. The pods are identical, and not only are you confined to your seat by roller-coaster style shoulder restraints (even on Green Team), the console moves very close to you when the pod closes. This is disturbing to some people. If you are unsure, the CM will lower the console before closing the door. Get his attention fast, because once the door closes, you'll be hard to hear and once the ride starts, you're on it for the full mission. It'll be 3 minutes, 55 seconds until that pod opens up again.
Sorry for the novel, but I hope it helps people. I am actually a big fan of Mission: SPACE and I think it uses cool technology (okay, I just love to play with all the switches). The warnings at the front of the ride can scare a lot of people off, but they don't really explain why. For the record I ride Green Team most of the time because of a back issue, and while I can ride Orange Team I don't think my doctor would approve (shh, don't tell him). I don't think they are really all that different and have just as much fun on Green Team.
Now, go make Gary Sinese proud, ISTC Cadets!