I rang Canvas Life, to check what was what, although I didn't mention the Alice in Wonderland disappearing act. They are part of French Life, and they do accept Tesco vouchers. If I went direct to their website instead of through French Life, the campsite still appears. It doesn't help for October, because it does close then and next school year is a SATS year for DS so I'm definitely stuck to school holidays. BUT I asked about May, and in May the minimum spend is £300 not £500 which is good news.