Information remembered from a previous border crossing may not necessarily reflect what applies to a future journey. Travelers change their routes, circumstances change, and entry policies can be updated over time. That is why I’d make a fresh check shortly before traveling instead of relying entirely on old notes or advice from friends. The Mexico Land Card Policy information can be reviewed as part of that preparation. It is also worth checking that your passport details and other travel records are consistent across your documents. A final review shortly before departure can catch things that were overlooked months earlier, when the trip was first being planned.