There's actually no such language as "Creole". The word creole refers to a type of language that results from the combination of two completely different parent languages. There are more than 100 different creolized languages in the world, so you would have to specify which one you're talking about.
If you're not sure, here is a list of the most commonly spoken Creoles in the world (one of them is even an official language):
In Flemish, you can say "Gelukkige pensioen" to wish someone a happy retirement.
In Afrikaans, you can say "gelukkige aftrede" to wish someone a happy retirement.
Je vous souhaite de passer une bonne et heureuse retraite.
"Maligayang pagreretiro" is how you say happy retirement in Tagalog.
If you want to say happy retirement in Italian you would say, pensione felice. You would say good luck by saying buona fortuna.
In Flemish, you can say "Gelukkige pensioen" to wish someone a happy retirement.
In Afrikaans, you can say "gelukkige aftrede" to wish someone a happy retirement.
In Korean, you can say "행복한 은퇴를 기원합니다" (haengbokhan euntwae-reul giwonhamnida) to wish someone a happy retirement. Another common expression is "은퇴를 축하합니다" (euntwae-reul chukhahamnida), which means "Congratulations on your retirement." Both phrases convey warm wishes for a joyful retirement.
Je vous souhaite de passer une bonne et heureuse retraite.
"Maligayang pagreretiro" is how you say happy retirement in Tagalog.
In English: This wish is sent to you In Creole: Mo souhaite twa sa voeu la
"Bonaniversè" is how you would say Happy Birthday in Louisiana Creole French.
Depending on the relationship with the person retiring, would determine what to say in a written Happy Retirement. If the relationship is not a close on, a simple "Congratulations and Happy Retirement" would be sufficient.
Joyeuses fetes
Happy retirement! translates as Alles Gute für den Ruhestand.
Deseo que tengas un jubilación feliz.
Happy Birthday and I wish you luck