My sister and her husband go there every New Year. In fact they used to go over Xmas too, but prefer now to see grandchildren at Xmas.
Benalmadena has a very strong Brit
community there. Basically it all revolves around meeting up with friends, pub crawling, restauarant hopping. There are specialist entertainment venues too.
Overall you will have a great time if you socialise. Not really sunbathing time, but it is fairly sunny in december (but not guaranteed sun), sunbeds are surrounded with windbreaks and you can sleep or read a book in relative warmth without getting sunburnt!
Generally best to stroll around Arroyo de la Miel area in Benalmadena to meet expats in resort.
Have a great time, my wife has read this post and is dribbling with jealousy!!:lol: