I've heard of these guys.
The thing is, in most of Latin America, the use and discharge of weapons for demonstration is banned, even old musket repros. Therefore, reenactment never set foot in most of these countries. Out of all South America, Argentina is the only country that has law-approved reenactments, while Chilean reenactors are limited to just wearing uniforms (SS Fallschirmjäger and a few rev war. lol.)
There are other countries, (I think Mexico's one of them), which prohibit all use of military uniforms for civilian use. Even those from the XIX century. Therefore, all sorts of reenactment are prohibited by law, except for the military (which has no interest in it anyway).
So yeah, don't expect any accurate reenactment impressions in Latin America. We argies barely managed to get something going, and at least we manage to look decent enough.
Oh, and 5 of us got into Waterloo 2015. Yay.-