How do you describe the everglades in something as short as a review..? You really can't, but I'll try. It is millions of acres of swampland, shockingly hot, filled with beasts that want to kill you, and enough bugs that you wish they would. And I mean all of that in the best possible way!!
What a simply incredible place. Take your time, and do your best to see it all. Or at least as much as you can from land, realize there are also unmeasurable miles of water trails you can paddle, and even camp on flotillas (elevated platforms built up on stilts over the water). Drive across the park from one visitor's center to the other. You'll see Big Cypress preserve, and drive for miles and miles on alligator alley, not hard to figure out why it's called that.. Take all the side trips to the trails, boardwalks, etc., you'll find maps in the visitors center of course.
It costs $25 to enter the park, and that gets you 7 days of unlimited entries. However, if you arrive after 5, you do not have to pay.
We camped for a couple days at Long Pine Key Campground inside the park ($16 per night, $8 with senior or access pass). No hookups, but pretty nice bathrooms and shower houses, of which there were many. I highly recommend it if you want to stay in the park!
The Gulf coast visitors center (the Northern one of the 2) is currently being rebuilt due to hurricane damage.