Because 20,000 is a weirdly perfect number. It’s big enough to feel huge. But small enough to still feel human.
Compare it to Wembley Stadium (90,000). Or a tiny pub (100 people). The O2 is the Goldilocks of venues. Not too big. Not too small.
It’s the size where you can still see the singer as a tiny dot. But you also feel the crowd’s energy. That’s the sweet spot.
The Bathroom Math
Let’s get silly. With 20,000 people, you need a lot of toilets. The O2 has about 700 cubicles. That’s one toilet for every 28 people.
The O2 | The O2
During a show, the queue for the ladies’ room can be 20 minutes long. That’s a social experiment right there. Strangers bonding over bad timing.
And the bar? They sell 4,000 pints per hour. That’s a small brewery’s entire output. And it’s gone in 60 minutes.