I could not respond as I was on AC033, I had a gentleman on the pod next to me heading to SYD and that is what he did, we parked at gate 52 and he walked out and then turned left to go through the BP checkpoint and I assume he went to the Signature Suite.

Hey no judgment if you like the A321, and if you luck out on flying one of the newly converted ones, then go for it. The Signature Suite is nice and a few hours on the ground before that long flight may be a good idea.