Hi Scottishmidge,
There is a place not far from you called the Rodeo which will make a change from your usual stuff. Its not far but you should probably get a taxi as it is on the other side of the motorway. It is a large all you can eat buffet which is 17.5 euros for adults (not sure how much for kids), great variety of salads, cold meats, chips, onion rings, curry sauce etc, however best bit is that the waiters come round all the time with different varieties of meat which are all excellent. Pork, steak, roast beef, gammon, sausages etc. You just choose what you like and you can have a break if you are getting too full.
If you walk down the beachfront you will find "Otellos" which does great garlic chicken, pretty cheap too.
You will get a map handed to you in the arrival hall at the airport.