When I had my mask made they told me in detail, in advance, everything I wanted and needed to know.

I didn't care for the "idea" of being bolted down, especially with the bouts of nausea. They addressed that pro-actively the first day with the mask, by going through the entire drill of removing it rapidly in case of vomiting or panic attacks. The reality was not that uncomfortable

Knowing that they had a plan, and were prepared for any problems I might have, made it much easier overall. In reality, it's not really all that different than a mask you may have worn as a kid on Halloween. I kept mine as well; it was an important symbol to me of my journey
Wayne