I could but wonder how long it would take to make this wonderful acheivement into an "Elf and Safety issue!"
I think it is fantastic that somebody with a will to live and enjoy the finer things in life can actually acheive their ambition! Sighted or not, it is a wonderful experience to fly one of the finest aircraft ever built!
So all that knock go get st####ed! If you have not done it, then dont knock it!!!!