It's an internet video stream, so watching it on a computer, laptop, tablet, or smartphone, should be no problem so long as you can read the ticket email and click the link on the same device. You don't need a TV serice,

Most of the foregoing discussion is because I wanted to display it a TV, which is more than twice as big and has better definition than my laptop, but is not 'smart' or internet connected.

I read that 75% of UK households 'have access to' a smart TV, so I'm in a minority. But I wonder if it's a minority of folk concert goers?