[Dixie]

Epilogue:
When you arrive in Mexico you fill out a customs form. When you give it to the customs agent he tears it, and gives you back half.

That isn't a receipt. Don't throw it away.

When you leave they want the other half back. If you don't have it, you get delayed. You get scolded by various officials and eventually get to fill another form out. That is, unless you're kinda cute, act demure, and talk to the agent in Spanish even though your Spanish is atrocious. In that case the agent will conclude you're more trouble than you're worth. He'll just shake his head in despair and say, "you know what? Just go. Just don't do it again."