Hola Karen!! Great to have you with us
I heard a lot of lovely things about Puerto Vallarta, it must be a beautiful place. We would love to hear some of your discoveries about the authentic Mexican cuisine, it's been a little more than 3 years since I came to Rome, and it has been a wonderful, interesting and tasty non stop learning experience about how the Italians really cook and eat...
I bet you will experience the same thing with the Mexican food and it will be great if you can share some of them with us!!
And don't worry about not finding "low fat" anything... I used to be really dependent on those things, but I just forgot about them since I have been in Italy. And I am healthier and fitter than ever!! Believe me, as long as you continue to choose fresh, quality ingredients, keep your diet balanced and keep yourself physically active, you will be just fine!!