There are two links I've provided in this answer to a similar question, one is for the spelling and the other an ebook/dictionary for Mauritian Creole.
I hope your little get together goes well and you have a good time with your friends speaking the language. If there are things not covered by the links, you are welcome to ask questions like "How do we say 'How old are you' in Creole?" or "How do you write "I've had a good time with you my friends' in Creole?".
Welcome to Clever Dodo btw :)