We cannot inform you if a CNI is needed by you to obtain hitched. You need to ask the receiving authority

Certificates of No Impediment to wedding (CNI) We could issue Certificates of No Impediment to Marriage (CNI) overseas. Oftentimes, you’ll not require it. Nevertheless the obtaining authority may ask you to answer for any other papers from Australia. This can include Solitary Reputation Certificates, No Record Result Certificates and Divorce Certificates. You may get these from a registry of births, …