RIP Charlie

Basically all you need is the cat chipping, and vaccinations for Rabies and the other 'normal' vaccinations/and or boosters and the cat will be issued with a passport.

There is no requirement to take the cat to the Vet in France before returning.  The cat is simply scanned at the port and checked against the chip number in the passport.

It's still wise to take the normal anti-tick and anti-flea treatments with you if you're staying any length of time.

Our cat loves both the caravan, where she sits on the front cushions looking out through the window (and exploring just the immediate area around the caravan) and also our holiday home where she has made friends with 'the village cats' (who are feral but friendly).  They all lie outside in the sun on the warm footpaths!  She hasn't yet joined them in the melee at the visiting butcher's van. He puts small morsels of trimmings out for them near where he parks and they all know when he's coming!.

We took our cat 'travelling' last year for the first time - and were surprised just how quickly she took to it.  We have a large cat box with bedding, and a litter area - and she is fed when we have comfort stops.  Actually she rarely eats when we're travelling, though she does drink.