To begin, I'd be very concerned at the thought of anyone having public gay sex in Bahrain, if that's where it's happening.
The Internet gives anyone many options on meeting first online, and then in a private setting. So I'd say to anyone: public (urban) sex isn't wise, and if it's bathroom-type stuff, you will, eventually, be noted by straight men or kids that just want to take a piss, and they don't deserve that.
As for age, rest assured that there are lots of guys – from your own age to just legal -- who have a thing for sex with older guys. Again, the Internet with the various dating/sexting apps, is a tool in getting a specific match.
Yes, your contacts may have a fetish, but who cares? Enjoy with confidence, and if they start judging you on age, end the encounter. :cool2: