I take it there's no age limit set for clubs over there.
There is. 18+. I always get in like this. When I get there, I begin to speak English next to the security guards. Their mentality is this formula
An guy from London = Got lots of money = Let him in, he will make good business for us.
And just in general, I dress like an older person and am just as mature. Last year I was fucking around infront of the guards, making funny faces and noises which resulted in me getting rejected multiple times.