It’s probably 16 years since we were at Aquila, it hadn’t been established that long and felt a bit like Noah’s Ark - 2 elephants, 2 giraffe (get the idea) and the lions were in their own fenced enclosure like a zoo. It looks as though it has expanded now and become more ‘safari like’ and it’s one of the few opportunities to see game in the Western Cape. Obviously, the best game parks are much further afield in the Eastern Cape and Kruger. Having said that it’s certainly a fun activity but given you only have a couple of days in CT there is so much to see and do within an hour of the city, my advice would be stay local (Aquila is a 2 hour + drive away) and go back to South Africa to do a ‘quality’ safari experience.
We are flying to the Western Cape for three weeks in 10 days (our 7th visit) and if visiting for 48 hours on a cruise ship, on day 1 I would book a tour (or rent a car) to Cape Point/Cape of Good Hope to include the African Penguins at Boulders Beach and a stop at Hout Bay and take in the spectacular Chapman’s Peak Drive en route to Cape Point. For a long day you might add a call at a Constantia winery eg Groot Constantia.
Day 2 take your pick of several CT attractions- Table Mountain cableway, Robben Island, Kirstenbosch Gardens, afternoon tea at the Mount Nelson hotel to name a few. So much choice, you need to be selective.