Photos of Holiday Inn Trade Center (Viaducto), Mexico City

Would appreciate some information regarding tipping in Mexico. I've not traveled south of the border and a couple of places I'd like to visit are...

What would you say? What is the best all inclusive resort in Cancun?

What's your advice on taking a bus from Puerto Vallarta to Guadalajara? How long is the ride? Do I have a few options or is there only one route?...