We were told about the glass doors being fitted in our first inspection trip in so the pools would be protected from the wind and dust.
I have also heard it was done to keep the Egyptian owner of regency Towers out. That makes a lot more sense than Andrew and Alison caring about the dust coming in, and paying out of their pocket a large sum for this. I believe they did it so they do not lose the whole building to the rightful Egyptian owner of Regency Towers.
I am going to drive by in the next couple days and have a look.