I would like to drive as little as possible and ultimately arrive in Quintana Roo.
Gasoline is scarce.
Fill up at El Rosario, the next station is over 200 miles away. However, independents sell gas at Catavina and L.A. Bay and sometimes at the L.A. Bay road jcn. Driving at night is not recommended due to range cattle, and you will miss increadible scenery. VERY Early and drive to San Ignacio, turn off the highway on the paved road that crosses the river into town. The Hotel La Pinta is in the oasis village.