El Yunque is nice but drive there. Experience some of the culture on the way if you are up for it. Stop at a road-side stand for fresh fruit, sample local cuisine etc., otherwise it's just another forest.
When you stop, watch your vehicle and your belongings and watch for cars pulling out in front of you with very little notice. You may see their arm come out as a signal that they are going to cut in front of you. Don't get mad, its the way it is!