Why do this? Since most people are right handed, they will typically choose the line on the right side. Going left will save time, except at Pirates of the Caribbean. The right side line goes up the ramp and right into the door. The left side wraps around the side of the building.
Tip 2: When is it less crowded in DISNEYLAND? The months of January and September, the first two weeks of November and the first week of December.