Most Michiganders know Cancun and Cozumel well. Both are among the closest and nicest spots in Mexico for travelers from the eastern half of the United States. But when it comes to the Pacific side of Mexico, we're more hazy. Which town is which? What are the major attractions? And how do you get there from Detroit? Here's a brief Mexican Pacific primer on three great destinations: Cabo San Lucas, Acapulco and Puerto Vallarta.