For example the laws relating to divorce will not be available to you. No you cannot. The law says that marriage in Vanuatu must be voluntary. This means that both the man and the woman must freely agree to the marriage. If either the man or the woman is being forced into the marriage it will be an unlawful marriage.
Nullity is different from getting a divorce.
A person who is found guilty of forcing another person to marry can be fined up to 100,000 vatu or put in prison for up to 2 years, or both. If you have two guardians it is enough if one of them agrees. This is because it is only once you reach the age of 21 years that you become an adult in the eyes of the law and legally responsible for you own actions. If you are under 21 years old and your parents or guardian will not agree to your marriage then you can ask the Magistrate's Court to look at your case. The Magistrate may allow you to marry even without your parents' or guardians' consent.