I did the Roar & Snore a few years ago.
We arrived in the evening and they took us for a quick visit to the (I think) Snow Leopard. Then we had dinner and then a 1-1.5 hour tour down the hill to see all the animals at night.

In the morning we were up early to have an experience with a sea lion. As it was a small group it was able to pass through our seats so we could all get a closeup. After that we went to feed the giraffes. This was all before the zoo opened in the morning.

From memory they advertise 3 "experiences" but swap them up to give the animals a break.

I visited with a mixture of adults and a couple of small children.