Where is the best place to go on the Costa Del sol for a lively stag party in May?

Got to be Benalmadena, there is an area called 24 hr square, and it means 24/7. Great night clubs and bars everywhere. The marina is right next to it with loads of open air bars, restaurants and night clubs. Also the airport is only 10-15 Min's away so its easy and cheap to get to. Pay for your drinks as you go then you know how much they are in different bars. I am not saying you will get ripped off merely the fact that prices do vary. Watch the measures as you get more than double than in the UK.
It can be rather hot here and you will not realize it because of the sea breeze so don't be too macho and bring the suntan lotion
Have a great time

I would say Torremolinos or Malaga

Remember if your going to the Costa Del Sol you are not far away from Gibralter for a day trip for your dirt cheap ciggies!

I found Benalmadena quite shite although I was there over the Xmas and New Year and it wasn't that lively then

Where ever you go to the Costa del Sol you will definately have a nice time but I would say Benalmadena. In Benalmadena one of the nights you are there you can visit Tivoli World its a large amusement park where you can find lots of restaurants and many different shows every night like flamenco dancing and concerts with different famous singers and if you want a nice day out come and visit my hometown Gibraltar you can go sightseeing and visit the apes up the rock. I hope you have a nice time.

I would definitely say Puerto Banus its very popular for stag parties and its loads of fun!!! I live an hour away from la Costa del sol and i have been to fuengirola, benalmadena and torremolines and i have to say the prize goes to Puerto Banus!!! So definitely consider going there hope you have a nice time at the stag party!!!

Depends how cheap you want it Benalmadena i think is the best cheap n cheerfull great bars n all 2 for 1 anything goes there so 4 a stag party ull be in ya element plus you have the marina nr by 10 min walk more expensive and you find the Spanish usually hang out there but some bars there are better.
Torremolinos great nite clubs and bars but beware as an area there is just 4 gays.
Fuengirola quite expensive lots of Irish bars which genrally rip you off compared to other areas.
Puerto Banus yes a majority of the stars go there hence the very expensive prices that go with it didn't think it was all that to be fair.Ive worked all over the Costa as I was a rep and must admit my heart was in Benalmadena. Hope this has helped and wish ya a happy but very drunk stag do.