Those are the places where I get by far the most Tinder matches. Also, those are the places where the girls are most eager to meet and of course they are the most attractive. Last time I was in Columbia, I was so overwhelmed with girls from Tinder and few random cold approaches that I did , that I was actively turning most girls down, just because I couldn't keep up. Aside from the huge validation spike, it is nice never having to really put in any effort to get laid.