If you get kicked out, or if the site crashes (which it will, like 80% of the time), refresh like your Wi-Fi depends on it. But not too fast! Use a different browser or incognito mode. I once got tickets after thirteen refreshes and a silent prayer to the ghost of Freddie Mercury. It works—sometimes.
Pro tip: Never have your credit card info autofill incorrectly. Ticketmaster will not hold your hand. They will just watch you type frantically as the last ticket in the 300-level section evaporates. You might cry. That’s okay. Tears are a natural lubricant for the keyboard.
Here's how to get Ariana Grande tickets for her two London O2 Arena