So this happened! I actually had a minute or two of vertigo after looking straight down. The view really is quite stunning. Just try to avoid the haze if possible (which I didn’t).
The Burj Khalifa has a number of terraces and it’s actually cheaper to go up to the 124th floor than the one even higher up (150+) and I’m not sure if that one offers an outdoor terrace. The one I was on has viewports that can fit a lens, if it’s not very big in diameter. I managed to fit my Sony FE 28 mm f/2 without major issues but I couldn’t use my Zeiss ZF 100 mm f/2 Makro-Planar T*. Forget trying to use any larger zoom lens, e.g. a 24-70 f/2.8 or 24-105 f/4. You can shoot through the glass itself of course, but there are so many reflections, you might want to use one of those special flexible anti-reflection hoods.
Don’t forget to look at the fountain show down below!
Shot with Sony A7R II + FE 28 mm f/2: f/8, 75 s, ISO 100.