I also got mine today, and just for shiggles I made my best effort to break my old straps in any way possible (using only my bare hands, of course). No luck...the strap wouldn't break. If anyone ends up breaking one of the new straps...there are no words.
At least Nintendo acknowledges Latin America about this now...
Wii Remote Wrist Strap Replacement
Unfortunately, we don't currently have information on how we will be replacing Wii Remote Wrist Straps for our consumers in Latin America. Please fill out this form and we will email you as soon as we have information available.
no idea of the number but you can phone nintendo for up to 4 free new straps, the difference is that the looped string on the ends that connect a knot to the wiimote are about twice as thick.
Got mine today and installed them on my Remotes. I also bought a new Remote today and can confirm the thicker straps are shipping with newer Remotes...