I had a great time, I went during the day and the view was amazing. The staff were very pleasant and professional. There are some small exhibits before entering the elevator, and they explained each, as well as let us take some time for photographs. You can spend as much time on the viewing deck as you like, it wasn’t crowded which was nice. The experience is worthwhile, it’s the fifth tallest tower in the world after all. I only subtract a point as it is a bit expensive, and for the price perhaps a free photograph would be nice. I think it’s an essential attraction to experience in Shenzhen.