No special clothing is required, and you won't need to wear an oxygen mask either. You will however have to wear a light-weight 3D Virtual Reality (VR) headset, but it is not heavy, has an adjustable strap and will not cover your nose or ears.
In terms of flying experience, you don't even have to have been on an aeroplane before! When you arrive for your flight experience, our flight engineer will talk you through the controls, show you how they operate and what they do. After which - up you go!
Don't worry if you don't get the hang of it immediately, the engineer will be watching an onboard computer screen as you fly and will advise if you need to do anything to keep airborne. If by chance you do 'crash the plane' then there will be no damage done to you, the flight simulator or anything else for that matter.