What does Avoir un heureux vacances in English mean?

The phrase "Avoir un heureux vacances" is a bit awkward in French. It literally translates to "To have a happy vacation" but it's not the usual way to express that in French.

Here are some better ways to say it:

* "Have a good vacation!" - "Bonnes vacances!"

* "Have a happy vacation!" - "Joyeuses vacances!"

* "Have a wonderful vacation!" - "De bonnes vacances!"

The best way to convey your well wishes is to use "Bonnes vacances!"