There were only two nightclubs open when we visited. My eldest daughter and her husband went one night and although it was free to get in the drinks were three times the price. No other english were there only the local spanish youngsters. I would imagine it would be more lively later in the season.
I think there are two nightclubs only - and didn't seem to be the Ibiza-types.
If you are into nightlife then Tossa is centred on quiet bars and restaurants.
(One mini golf and one "ten-pin bowling" alley - bars really!)