We were there for 5 days and saw one single male. This is more of a couples resort than Cancun. We are kind of dumb when it comes to knowing if someone is trying to "party" so we might have just missed it.
Single and wants to play I would also like to know if this is common. I know that most places single men are left out, while single women are always welcome.
when we were in cabo in september, i think there were 4 single guys in a resort that had MAYBE 30 couples. they didn't cause any problems though. we got to know 3 of them, and they were really nice. as far as partying, they partied as much as anyone else. but if you mean 'partying', then i don't know what their success rate was... but i do know they tried. they weren't obnoxious about it though, at least not from our perspective.
I've been to Cancun 4 times and always as a single, Nov 14 - 21 will be my 1st time to Cabo and will be coming as a single. As for hooking up, never have yet, but then again I come for the atmosphere and to relax in an Adult environment. Hindsight being 20-20 I realise I missed out on a few opportunities but like most men unless you hit me on the head and say "Hey, this is what I want you to do" I'm blissfully unaware. Hope my time at Cabo will be welcoming and don't want to feel like an interloper.