Not many zoo deals other than their open days. However at least with this deal you can pick to go whenever you want like the weekend.
- Offer is valid until 29 February 2020
- Offer is valid during opening hours only.
- Only one voucher per person.
- Not to be used in conjunction with any other offer.
- Free entry must be of equal or lower value to paid entry
Just hit day 3 on the advent calendar and then show the email on your phone or print out, when you go and buy your tickets. Should work for kids tickets as well. So should be able to get 2 adults and 2 kids for $37 assuming you have an even # of family members.