Des bonnes means "some good ones"
des bons amis, des bonnes amies (for an all-girl group)
The cast of Le journal des bonnes nouvelles - 2002 includes: Patrice Carmouze as Panelist Richard Gere as himself Estelle Martin as Co-host Patrick Mille as Chico (Le monde de Chico)
Étienne Bonnes was born in 1894.
The population of Eaux-Bonnes is 426.
If you mean one person, or if it's informalJ'espère que tu passeras de bonnes vacancesIf you mean several persons, or if it's formalJ'espère que vous passerez de bonnes vacances
The area of Eaux-Bonnes is 38.52 square kilometers.
Olivier Bonnes was born on 1990-02-07.
Stéphane Bonnes was born on 1978-02-26.
Les Bonnes Femmes was created in 1960.
The duration of Les Bonnes Femmes is 1.67 hours.
It depends on the context. If you just wish to use the expression "Have a good vacation!" you would say "Bon vacances" in French. If you want to describe a vacation as having been good or similar, i.e. "I had a good vacation; I went to beach." you would say "des bonnes vacances".
Have a lovely holiday too beautiful!