Get there early to avoid heat & crowds. Trust me, the jungle gets hot!
Definitely rent a bike to avoid long walks and to be able to see everything in a timely manner. The bikes were inexpensive and are definitely worth the price to be able to see the entire site. Fun fact: I had a pink bicycle with "Princess Butterfly" written across it.
Stop at the small Mayan towns during your drive here. There are amazing locally made crafts, hand made furniture and more. I fell in love with a shop that makes natural shampoos, conditioner, body-wash, lotions and more. Check out my post here to read more about it.
View from the top.