Just another thought, the showers are great, but in my experience, there are usually several single men already set up in the 'best seats' for this show. Single men in Spain tend to look very closely at everything ( but the women in particular), northern Europeans tend to bring i-pods or books, Spanish guys just stare. This can cramp you freedom to snap, it is a while since I was at Vera Playa, (it's 2-3 hours drive from here), so I may be over stating what it is like there. The above comments are about my locality.
Another thing worth thinking about (which you may do already) is positioning yourself so the sun lights your subjects, and avoid pointing to the sea, as this causes light problems too, with reflected light. One final thought (sorry, this was not meant to a lecture
) try to avoid setting up next to girls without any men (unless you have a lady with you), girls are (rightly?) suspicious of single guys getting close. They will be keeping an eye on you, my method is to look inocent......and (with luck
), they will come to you!
Good luck!!!!