Hello! That sounds like an exciting trip. Here are some travel tips for your visit to Cahuita, Limón, and Gandoca in Costa Rica.

Best Time to Visit:
The best time to visit Cahuita, Limón, and Gandoca for ideal weather conditions is from December to April, which is the dry season. It is perfect for outdoor activities and exploring the lush biodiversity of the region.

Route and Accessibility:
The Juan Santamaria International Airport is the nearest to Limón province. From there, one can rent a car or take a local bus to reach Cahuita, Limón, or Gandoca. Taxis and local buses are also prevalent for intra-city travels.

Accommodation and Booking:
There are a variety of accommodations available in Cahuita, Limón, and Gandoca, from budget hostels to luxury resorts. It's advisable to book your accommodations in advance, especially during the peak tourist season. Websites like Booking.com or Airbnb are convenient platforms for reservation.

Clothing and Essentials:
Carry lightweight clothing, a rain jacket irrespective of the season, sunblock, mosquito repellent, a hat, and sturdy footwear for hiking and exploring. Don't forget your swimwear to enjoy the stunning coastlines.

Health and Safety:
Make sure to have updated vaccinations as recommended by your doctor. Avoid drinking tap water unless it’s been purified. It's good to have travel insurance coverage. In case of any emergency, dial 911.

Local Etiquette and Respect:
Costa Ricans (also known as "Ticos") are known for their friendly and respectful nature. A simple 'Hola!' (Hello) or 'Gracias!' (Thank you) is much appreciated. Respect the local biodiversity, and refrain from touching or feeding wild animals.