At the Vets!

I realize that this site isn't for free translation but I was wondering if you could correct the following please? Basically I want to phone the vets to book my dog in for the usual treatment to travel back on the ferry. " Bonjour, Je voudrais arranger un rendez vous pour ma chienne mardi prochain, le matin si possible. C'est pour les conditions du ferry. Le ferry part mercredi a six heures" Is that correct please?

Salut, it would be better to say: "Bonjour, je voudrais prendre rendez-vous pour ma chienne mardi prochain, le matin si possible. C'est pour pouvoir prendre le ferry qui part mercredi à six heures." But I'm sure you will be understood even if you word it slightly differently. All the best