You'll find lots of information about electric 'oddities' in France on this site. Firstly, you may need a continental adaptor, which is available from most caravan shops and you may need a second, which has been rewired to deal with 'reverse polarity' which happens on some French sites. I'm not tecchie, but there is information on this site. about this. Otherwise, there are no problems, except that your hook-up point may be a long way from your van (or each pitch may have one just on the doorstep, together with water). Either state is common in France. Well done for going the first time - and have a lovely time. Sorry, we're at Abersoch for Easter, otherwise would have dropped by for a beer.