Visa checks/needed Port of Spain and Scarborough

Hi! I am looking at a cruise that stops at Port of Spain and Scarborough in T&T.

Can anyone tell me if they require the passport holders of countries requiring a visa to visit T&T eg. South Africa, New Zealand, Australia, etc to actually have a visa when just stopping for the day on a cruise ship? Or can you just get on and off with your ships card and no-one bothers to check like most places?

Also, if they are checked who checks that you have one - the ship preboarding (when checking in), Trinidad and Tobago officials at the dock when you arrive, etc.

If anyone has been there recently (last 2 years) and can give me any advice on this matter I would appreciate it.

Thanks

Just saw on visahq an Australian site that you don't need a visa. My wife is Australian and just checked.