--you must be cool and comfortable at all times (you will get hot and sweaty on excursions, and you must stay hydrated in the tropical heat);
--you don't want to get your feet wet (you need to wade to shore for the hikes);
--you don't want to see amazing plant, animal, bird, and insect life up close and personal with narration by skilled and informed naturalists;
We upgraded to get a little more room and a regular sized bathroom with a nice shower. Very comfortable, with a little sitting area.