If the answer above is None it means there is no specific mention in the legislation, but you still need to ask local law enforcement before drinking in Trinidad and Tobago.
It is prohibited to sell, serve or supply alcohol beverages to child under the age of 18 years. It is also prohibited for an adult to send a child to buy alcohol on behalf. It is not prohibited for children to buy or consume alcohol.
You can find more legal details and links here:
Wikipedia Legal Drinking Page