We snagged sunset tickets to Sky Garden. I logged in shortly after tickets were made available…read moreonline three weeks prior and was able to book tickets for one of the nights of our trip. I would have preferred an earlier evening time slot, but they were not available.
They are quite strict about going in at your designated time slot and they let people up in the elevator only when its your time. We were actually waiting in the lobby of an adjacent building where there was lots of seating, not realizing that the line formed on the *other side* of the building so beware.
We lined up, went through security, went up the elevators, and then had an unlimited time up in Sky Garden. Since we already ate dinner, we didn't buy any food or drinks.
The enclosed rooftop space is really quite breathtaking. There are all walls on all four sides which makes the views just unbelievable. There is a balcony as well, but it was closed at the time of our visit (at night?) From the "front" lower side, you can see River Thames and the Tower Bridge/Tower of London. From the back, there are amazing views of The Gherkin. Up at the higher side, there is more space and some platforms to sit. However, it was really hard to be on the stairs going up and down because it was so congested. As you can imagine, the photos out the windows are amazing because the views are amazing. However, it's impossible to get photos of your party because there will be tons of people around you.
The whole space is just packed with tourists. I was glad to have experienced it once, but I don't ever plan on returning and would try a viewing area that is less touristy. It's worth a stop but not worth taking a huge chunk of time from your day if it doesn't slot in naturally.