Okay, here is the lowdown on Mission: SPACE - Orange Team.
You will board a capsule in a row of four with a console in front of you. This console will move to be incredibly close when they close it up. Some people find this to induce claustrophobia. Both Green and Orange have this exact setup. If that bothers you, you might reconsider right there. If that's no problem, there are video screens with 3-D video on them in front of everyone (individual screens) and several buttons and switches to play with. Only two of the buttons have an effect, at specific times during the ride. The narration will tell you when to push them, but don't worry, you don't have to. The Orange Team version will spin to create higher G-forces. It only accelerates to maximum three times during the ride, and for about 10 to 15 seconds each time. The rest of the time you will not feel extra G forces. You cannot tell that you are spinning (it's like one of those "Gravitron" or flying saucer rides at a carnival). The capsule will also tilt and shake a bit, but it's not that intense.
The Green Team version has a different story now with different graphics. You will still use the buttons to perform actions and the capsule will shake and tilt. There is no spinning or high G-forces on the Green Team version.
I would advise maybe trying Green Team first to get an idea of what to expect. The best tips for Orange are to keep your head facing forward at all times. Turning your head will mess up your equilibrium, even with your eyes closed. Keep your head facing forward and close your eyes if it gets to be too much. Concentrate on the air blowing on your face. There are actually air sickness bags in the compartment in front of you should you need one.
Good luck, Mars Team. You are on the clock!