Still, we should note that we can’t see an active license on the site. Grand Rush Casino states that it’s a fully secure and legit online casino in Australia and New Zealand operating under a license issued by the Government of Curacao. Australians and New Zealanders will feel right at home with an Aussie-friendly website design and some kangaroos sneaking here and there Australians and New Zealanders will feel right at home! Grand Rush Casino is an online betting venue dedicated to online casino players in Australia and New Zealand.