Have holidayed for several years on the Ile de Re. A beautiful island though busy in high season. There are plenty of sites although in peak season all are frequently full. There will be no problem in September - check first your site is open for the duration of your stay - several seem to close early. On a practical note the only 2 reasonable supermarkets are in the La Flotte / St Martin area - there is a third smaller one at Ars. Most sites on the island forbid barbecues. The toll car + caravan is of the order of