Can I use a Discovery Park Voucher at G'day Parks? 06 July 2022 05:03 Updated Discovery Park Gift Vouchers can only be used at a Discovery Holiday Park. Related articles Can I use a G'day Park Voucher at Discovery Parks? How do I purchase Discovery Parks Gift Vouchers? How do I purchase G’day Parks Gift Vouchers? My G’day Parks voucher isn’t working online? How do I redeem my fuel discount?