I am thinking about going to the Caribbean coast in Colombia in early July. Tayrona National Park sounds beautiful, but I've read that it can be fairly crowded during that time of year. Are there any parts of the park that are less busy and/or more remote (maybe Playa Brava)? Are there other places in Northern Colombia that may be a better choice as far as scenic beaches? What about Rosario Islands, Gulf of Morrosquillo, or San Bernardo Islands? Thanks.