Good deal if you are in the area. Went to this with the family and it was well worth $20 per person. Never seen so many koalas and kangaroos in one place. You are also able to interact with the kangaroos and get quite close to a lot of the animals. Deal also provides a few vouchers to spend at the cafes (spend $25 and can use a $5 off voucher). Parking is $10 or free for RACQ members with a valid member card.
If it's your first Groupon purchase, you can also use the code "WELCOME" for $10 off. Was not able to get this to work for some reason.
Great place however the food is absolute crap and expensive as!