For the Tropical Incentives special rate: https://b2b.tropicalincentives.com/groups/ethereum-foundation-devcon/transportation
If this is the first time flying into Cancun, booking an airport transfer to take you from the airport to your hotel provides an alternative to taking a costly taxi, which is often inconsistent in service.
Note that the drivers and airport transfer employees are not able to come inside the terminal to greet you. So after you have picked up your baggage and passed through immigrations and customs/duties, keep walking until you are literally outside in the open air. At that point you will see drivers with signs holding signs for their passengers. Anyone who tries to detain you before you exit the terminal is soliciting for a travel or vacation service of some sort. Politely decline and continue to walk to the exit.