If you can plan ahead, make sure to do so, especially for the popular sunset times. We wanted to see the sunset and did book weeks in advance as soon as our day opened online (had to keep checking). When we got in line at 3:30pm we heard them advising people without reservations to come back around 9pm. The views are beautiful - there are 2 levels and you can see 360 views using both levels. We didn’t order drinks or food. Just went for the views. The SkyGarden is free. The Shard isn’t. But check out both to see which better suits your wants. The SkyGarden was perfect for what we wanted to see and we highly recommend it!