Here are a few other options, depending on the specific flavor of Creole and the level of formality:
* "Bon jou!" (Good day!) - More casual and can be used as a greeting and farewell
* "Jounalé ou bon!" (Your day is good!) - More formal and expresses a wish for their well-being
* "Jounalé bon!" (Good day!) - A slightly less formal way of saying "Have a nice day."
* "Jou ou bèl!" (Your day is beautiful!) - A more poetic and elegant way of saying "Have a nice day."
Remember, the best choice will depend on the context and your relationship with the person.