Yes some animals not all.
Yes to both. Go early enough that its still a little light out. Some of the animals are harder to see after dark but there lights are more beautiful after dark.
Yes but not all animals come out and are active
Go early when it's still light out and you'll see most. We went back in late november and couldnt see any animals just because of the time of year (poor planning on our part) but you should be good now!
During Zoo Lights events there are no specifically designated "off display" animals. You have the same chance at seeing all available animals as you would if you went during the day or any other night.
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