Any tips on animals/enclosures we must not missHopefully we will see EVERYTHING!
If it's not busy you'll be able to go back to the entrance area and get extra Panda tickets for later in the day (when there's fewer people in the groups being shown around the exhibit). I never booked Panda tickets in advance and had full choice of visiting times when I reciprocally entered on two days last week (both weekdays though).
Get the "Safari Bus/Train" to the top of the hill and work your way downhill rather than hiking up -the zoos quite steep in areas and this will save you a little energy.
View "Big Cats/Carnivore Row" later in the day as they tend to be more active then.
Don't miss the unlabelled Cock-of-the-Rock in the Beautiful Birds exhibit.
Check out the little alley to the side of the Golden Cat exhibit (next to the Aardwolf & Mongoose) as the Golden Cat might be viewable (we saw it there, though through bushes).
Don't miss the Marbled Polecats (though chances of seeing them small) -concrete building between SkyWalk thing and Beautiful Birds.
There is an adorable baby Pygmy Hippo there at the moment.
Finally, don't miss the Guinea Baboons in the (old) separation part of the Lion House.