When you land at Puerto Vallarta International Airport, you will go through Customs and exit into a hall with currency exchange services and various vendors selling condo time-shares, baggage-carrying services, etc. KEEP GOING PAST THIS AREA to the meet-and-greet area, and then directly outside.
Your driver will be standing with others and will be wearing a red Guayabera shirt with khaki pants. He will also be holding a paddle sign with the blue Sayulita Luxury Transportation anchor on it, and will know your full name and drop-off location when asked.