Michael,
We drove through Spain via Madrid to Grandada and up the coast through Valencia then home through France. Found a gem of a site at Tabernas called Oro Verde (www.oroverde.co.uk - if you want more photos, let me know). English owned olive grove with about 20 pitches,electric and swimming pool but little else for your children. However, it is only a couple of miles from the film studios where they filmed the 'spagetti westerns' which is definately worth a visit and about 40 minuted from the coast. Another site we enjoyed immensely was Kiko Park Rural - about 40 miles inland from Valencia, the final 4kms to the site are fabulous. The site itself is a kind of recreated village with most facilities and a pool. If you want more action though, you will need to look at the Costas. Good hunting, Phil.