If your like me and you are ok with heights, but not greatbe brave and step out. When you first step onto the glass floor its a bit disconcerting, but push your self to do it , the pay off is fantastic. dont rush yourself and dont take out the camera straight away take a bit of time to get used to it. Its remarkable how quickly you do get used to it . In actual fact i was more concerned about the steel grated sections drop your phone etc. and if it falls between grate you will be waiting a while before it smashes.
In the immortal words of Mrs Doyle " Go on, go on, go on, go on, go on" You wont regret it