In Cannes, the hotel parking rates are US style....around $20 per day. There is parking throughout Cannes in various underground, underhotel places...The Noga Hilton has a large garage, as does the Grey D'Albion Hotel. There is also a big garage under the Palais, and also at the railroad station. Rates at all these venues are around $15 for 24 hours, skewed towards very expensive for short term.

If you're interested in daytrips from Cannes...you have many opportunities : Juan les Pins, Antibes and the hotel du Cap are anywhere from 30-45 minutes away ( because of heavy beach traffic and awful parking roadside often rendering the lane of traffic to one), but you shouldn't miss lunch at the Eden Roc Restaurant at the hotel duCap. Beware, CASH only.

Beyond that, you can drive to St Paul de Vence, or mote Carlon , but don't miss Eze, the hilltop castle town locerlooking monte Carlo.

going west you have to go to St TRopez, and depending how far you want to go, Aix-de-Provence. Enjoy, it's beautiful.

But Summertime is very crowded.