Upscale take on the all-inclusive megaresort, with a superlative spa and Jack Nicklaus–designed golf course Tropical chaos. Three separate sections make up this upscale all-inclusive megaresort in Cancún, but as they were all were built at different times there’s no cohesive aesthetic. The common denominator is a tropical theme, with lots of gleaming white surfaces, tile floors, ferns and foliage, and such touches as hammocks and sun umbrellas. All the buildings are low-rise and front…