One of the charms of Venezuela, including the Morrocoy National Park, is the lack of infrastructure. The best way to get out to some of the keys (cayos, e.g., cayo sombrero) is to hire someone with a boat to take you out there. Over the years things have developed more, but it is still amazing to see the lack of hotels, transportation, and restaurants. It's really part of what makes a trip to Morrocoy so fun.