AP travel experience questionss.

Leaving for Mexico tomorrow on AP out of Houston.. are there any gotchas I need to know or any advice? I'm hoping for some stories to calm my nerves as they are completely shot..I spent the last 3 months out of work freaking out over possibly losing my job. I finally went back to work and AP was approved so it's not like I got a break from the anxiety and stress. I'm sitting next to wife trying not have a panic attack.

Return; In case anyone wants to know. I did make it back. It was a short trip but I packed a lot into it.

The experience went very smoothly, no issues with boarding except I didn't know how to fill out the survey they give to Mexican nationals leaving. On arrival I got in the wrong line but nothing bad happened. When I finally made it to the little room I was there a total of 5 min. Got my stamps and on my way to my connecting flight.