I went on a cruise from LA to Mexico in October, 2009. We stopped in Puerto Vallarta and Cabo San Lucas.
Puerto Vallarta
Puerto Vallarta is on of the most popular tourist destinations on west coast of Mexico
Cabo San Lucas
Cabo San Lucas is at the southern tip of the Baja California peninsula. It is known for white beaches, abundant marine life and the distinctive sea arch El Arco de Cabo San Lucas.