You should use Google Translate, it is very useful, and it is getting better, because a lot of native speakers collaborate in making translations more accurate. The most amazing thing is, if you think the answer isnât good enough, you can put the cursor in the answer, click it, and voilÃ , more options appear.
The minimum legal drinking age in Mexico, including Cancun, is  18 years old. Mexico requires that young adults show photo identification showing proof of age when purchasing alcohol, but this practice is not always strictly enforced at most resorts, bars, and nightclubs.
Mark Kleiman, predictibly, has some eminently sensible suggestions : Setting the minimum legal drinking age at 21 saves lives by reducing drunk driving, and not just among the 18-to-21's; if 18-year-old high school seniors can buy beer at the supermarket, then 16-year-old high school sophomores have access to it.