The one thing I am concerned about with tourists in space is people thinking you can just get on a rocket and just go into space.
“It’s not like riding a commercial aircraft, not at all, and I can see all these problems with people up there and throwing up and messing up somebody’s flight that they paid $250,000 for.
“Your first moments in space are not always your best. I remember when we were in the shuttle and you are at 3Gs for the last two minutes or so, and it’s a little hard to breathe and then the engine shuts off, and boom, you’re weightless, it’s that fast.
“I could feel the blood rushing and in 30 seconds I was going ‘uh oh’, I am going to be one of the ones who is not going to feel good and I was extremely grateful that I had eaten absolutely nothing for breakfast.
“I was lucky I never threw up, because if you think throwing up is bad here on the ground it’s really bad in space.” Source