Rivedoux-Plage is a commune in the Charente-Maritime department in southwestern France. It is situated on the Île de Ré. The commune in…Rivedoux-Plage is a commune in the Charente-Maritime department in southwestern France. It is situated on the Île de Ré. The commune includes the beach of Sablanceau. People who live on the island are called the Rivedousais and the Rivedousaises.