Get your mind out of the gutter and into a white-water raft, or some hiking boots, or a ziplining rig. For adventurous couples, relaxing on the beach with fruity drinks just won’t do for your honeymoon. If that describes you, Costa Rica should be on your adrenaline-packed itinerary. Costa Rica’s unique volcanoes are a major draw. Volcan Irazu’s bright turquoise...