Another fan here! But as forevyoung said, positioning is everything. I had dinner with a pregnant friend and notice she was wearing them, but she said they weren't working. I told her it didn't look like she had them in the right place and repositioned them for her. She said it was a miracle! I carry my Seabands whereever I go because I can't even ride in the back seat of cars, but I did Mission Space!
Also, on Mission Space, please make sure you follow the advice to keep eyes open and straight ahead AT ALL TIMES!!!!