I really enjoyed this book & it was a bona fide companion during my trip to Cancun/Merida. Lots of useful information, especially the technical stuff (e.g., safety precautions, medical/immunization, currency exchange & banks/money...) A huge plus is the upgrades, which are avaliable on-line (although I actually consulted the "Mexico" & "Belize, Guatemala, Ycatan" updates; turns out there was not much in terms of my trip, but the resource is fabulous for other travel destinations). One big bummer is the maps. They're adequate but really quite boring to read & they take some getting used to.