Tanpri (or) Souple.
These simple words meaning please are interchangeable. In my experience, Tampri is more common. You will frequently hear the French phrase for please as well, even from non-French speakers.
Si vous plas (French)
Good manners are important and Haiti is no exception. When asking for something a simple please (tanpri) is always a sign of respect. When receiving something, it’s proper to offer a thank you (mèsi). This is especially helpful for visitors to Haiti. Learning these basic expressions will go a long way to show your good intentions.
This is something that matters in all social settings. If you give respect, you can expect to recieve it back in return.
These audio pronunciations answer the question: How to say thank you and please in Haitian Creole.