mon ami is actually my friend, I believe. In southwest Louisiana we say mes amis for my friends.
well - cajun translate for goodnight is bonne nuit. i think that is how you say it to your friends as well!
Ain p'tit brin (a little bit)
In Cajun French, you would say "Sava?" to ask "How are you?"
To say "it is good" in Cajun French, you can say "c'est bon."
To say "going home" in Cajun French, you can say "aller chez nous".
Sur le temps.
In Cajun French, you can say "cher(e)" or "mon cher" to mean sweetheart.
In Cajun French, you would say "la fête" to mean party.
In Cajun French, you would say "À la prochaine" or "Adieu" to say Goodbye.
Cajun is not a language, but the language they do speak is French. Although I do not know Cajun slang, go ahead and say the fancy "Bon anniversaire".
In Cajun French, you can say "Passe une bonne journée" which translates to "Have a good day."
In Cajun French, "how much" is often translated as "combyen" or "konbyen."