Aria is the only hotel casino within CityCenter. It is located in the rear of the complex. It's a decent walk from the strip.
I was under the impression Aria would open at 11:21pm on Dec 16. Fireworks got underway about that time. However, doors did not open until shortly before midnight. This was the first opening I've attended where the doors did not open immediately following the fireworks.
The display was short, but fun to see.
Next, we waited... and waited...
Then, we were allowed to enter in small groups just before midnight.
We headed straight for the casino once inside.