Do you know that Benidorm has a dedicated police force that patrols the beaches at night to try and curb 'sex on the beach ' .. It is really a shame that Benidorm has this reputation . I remember being by the beach at night ( walking ! ) and thinking how incredible the beach was . Unfortunately , during the day , it is packed like sardines in a can .
Of course many Spanish beaches are packed in high season .. but I remember an English woman ( a teacher from London who has lived in Madrid for some years ) saying that even if you go to a relatively empty beach and set down your towel , a Spanish family will often sit right by you . It seems a cultural thing : The Spanish are more sociable whereas the British ( and Americans )like their 'personal space' . I see myself as being sociable but I DO love my 'personal space' .

exactly that is why I advise Calpe, real beaches, real fun, family area and it is beautiful
http://www.infocostablanca.com/en/l%20calpe.htm

have fun ;my kids love it, and will certainly be back

oh my kids as I call them are 18 twins and 20 yrs old. lol!!!