Short answer is no! We were looking last year Portugal is quite conservative, shame really because the beach are lovely, you have much more luck in Spain!
The strip gets quite busy, we met a couple of guys who were up for some fun but half way through the night k got a bad feeling about them so nothing happened, could try that approach! Good luck!
Quite suprised there isn’t something in Vilamoura … it’s got “gentlemens clubs” and “ massage” parlours …. Suprised that there isn’t swingers club there