For years Puerto Vallarta lived in relative obscurity, eclipsed by more popular resorts like Cancun and Acapulco. But over the last 50 years, word of Puerto Vallarta's beauty has gotten out. The town was a frequent port of call in the popular 70s and 80s TV show “The Love Boat" and in 1964, it was the backdrop for Ava Gardner and Richard Burton’s movie “The Night of the Iguana.” The movie’s success, along with Burton’s off-screen relationship with film siren Elizabeth Taylor, helped draw attention to the . . .