I have been to Mexico myself, and all by myself 😀 :!:
I was on a group trip in the USA in 2002. While in San Diego, i got early in the morning, caught the trolley down to the border, and hopped over to Tijuana. Spent a few hours walking the streets, charming pretty Mexican girls along the way 😉
(- oh, and being offered every type of fake watch under the sun! 😉 ) - them were the days 🙂
I'd love to visit the Mexican countryside, it looks amazing 🙂