There are regular flights from Paris to Chamonix, and good train service and roads throughout the region. If you are driving, relax for slow, hilly, winding roads, with spectacular views to compensate.
Royans is known for its ravioli. The Drôme Provençale offers asparagus, guineafowl, truffles, olives, and Picodon cheese washed down with a light red Coteaux de Tricastin. The Ardêche has sturdier fare: turkey with chestnuts, partridge with cabbage, very good with a local Chardonnay.