Im wondering how we will judge whether this is a success seen as there is no basis to compare. I would see it as a success if there were 20,000 people there seen as that would be a decent international attendance anywhere in the world but that would just look rubbish in such a big ground.

Not really, as I will be watching this at sea level

Will this be the highest altitude pro RL game ever?

I wouldn't know but it did say on the RU England SA commentary the other day that you need a minimum of 10 days at altitude to adjust correctly. That's why the union side fell away after 20 mins.

We are not playing a Denver based team. Altitude will affect both teams equally.
It would be better if both were at their best of course but it isn't an advantage to anyone.

It's an advantage if you suffer from Asthma. I can confirm that.