Hi - firstly, you pay once, but have to book in at least 2 and maybe 3 separate locations. 1. Pay for your ticket, nominate the day 2. Register at the hotel website and book your time (if you are want to go after 5:00). It gets dark around 7:30. Better at night 3. Register and book at Ce La Vi bar if you want to have a drink up there If you are short of time, there is a light show at the supertrees set to music at 7:45 and 8:45 lasting 15 minutes. So combining the 2 is possible.

It was easy to get the tickets to the observation deck and it was very convenient for visitors to go directly to the observation deck, to enjoy the beautiful scenery. The view on the observation deck was amazing and will always remain in my memory of my visit to Singapore.

There are other high places in Singapore but this offers a good all-round perspective of the city and beyond. It's a good-sized space to move around in and didn't get too crowded when I was there. The interpretive signs are useful. There is a coffee stand if you need refreshments. Like most things in Singapore it's pricey. I didn't buy the photo they took, partly as it's not actually taken at the top but against a green screen, then superimposed.