I will be traveling around the South of France in a couple weeks. I am a videographer and will be carrying my camera backpack and small pack with my clothes in it. I would like to store my small pack in a locker somewhere while I visit and film the towns of Avignon, Arles, and Marseille. Do the train stations in the city center offer lockers for such a thing? Or is there any other way to store a small pack while I go out and film?