"Boink!" the thread again in the morning (Monday) and you'll likely have more response. Friday night through Sunday are slower days.
But just now as I look at your itinerary I say it's too ambitious for the short time you have available to you. And if "Partying and spending quality time on the beach" is your main objective I'd go directly SOUTH to the Costa del Sol (Marbella, Málaga, Estepona, etcetera) and skip the others. BCN will be too cold still for any beach time (unless you just want to walk). 6-days is NOT enough time to do all this.
Too bad you're landing in BCN and not Madrid in the first place. It's a lonnnnnng way, like 6-hours by bus, from BCN to Madrid AND THEN you want to drive another, what, 4 hours to Córdoba?
Wow! Talk about a road trip! (check
http://www.viamichelin.com for drive times and distances)
You might want to cut out some of the others and spend more time in Marbella as that's the only place, in May, where you'll get beach time.
You might, instead, want to consider spending more quality time in Barcelona and maybe driving down the coast to/through Valencia Province/City, MAYBE get some beach time in there, and then return to BCN. This would certainly make for a more enjoyable, relaxing time in Spain with limited travel.
Good luck and enjoy your time, your return to Spain!
Saludos, MadridMan
P.S. "Boink!" means to simply reply to your own thread in order to bring it back into the Daily Threads list.