Another transport option to Ile de Ré is the boat from La Rochelle's Old Harbour to St. Martin. There are only a couple of daily departures and only to St. Martin, but maybe that will work for you.
Sails from the Old Harbour. Boat company servicing Ile de Ré, Fort Boyard, Ile d'Aix:
We arrived by TGV in La Rochelle and quickly found the busses to Ile de Ré in front of the station. They cost about 15 euros and they run the length of the island, stopping in the main towns. There are, however, different routes so be aware that some busses don't go to St. Martin, only the towns on the south coast. For example.
Website for the bus company: www.aunis-saintonge.fr/rebus
If you're in Ile de Ré you'll be wanting a bike. If you're in Ars, rent one here, at Cycles et Pêche (bikes and fishing gear). Lovely people, good bikes. You can also rent bike seats or trailers for kids.
2, place de la Chapelle
t: 05 46 29 20 88
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