If the idea of playing Robinson Crusoe on a picture-perfect island appeals to you, then a deserted island trip is a 'must try'. Hop on board and you're soon dropped off at a deserted island, just the two of you. It's certainly a lot more luxurious than Crusoe's experience, though: a picnic table, chilled drinks and umbrella will be waiting for you. Your man Friday will even give you a mobile phone so you can call for someone to pick you up when you're done swimming, snorkeling, sunbathing and exploring the island. Keep an eye out for dolphins on the way over to the island.