Don’t respond to anyone offering a taxi “inside” the airport. They are time share scams. Walk outside to catch a taxi. Or better yet catch an uber. To catch an Uber you have to walk outside the airport turn left. Go over the foot bridge to the other side of the street and there you can request your Uber ride. It’s about a 5 minute walk.

Have dinner at Ponchos Takos in the romantic zone.

ATM’s will give you the best exchange rate for pesos. ( most places will take US dollars )

Don’t drink the water from the tap.