You should take US dollars in low denominations, enough for your expenses during the trip. In most supermarkets and restaurants you can pay with credit or debit card.

No. Infants under 3 years old don’t pay, you can bring them for free. Children from 3 to 12 years old pay a discounted price. Adults (13 years old and up) pay the regular price for the tour.

We recommend comfortable clothes & shoes, and a raincoat in case of rain. Keep in mind that the weather is usually warm.

A few things that we recommend you to bring are:

Mosquito repellent
Sunscreen
A hat or cap

Also, but not mandatory, you could bring:
Your own bottled water
Binoculars
Some snacks
Photographic camera (recommended)

You pay at the end of your tour