Costa Rica during the rainy season is green, quiet, and honestly just better. The afternoon downpours cool things down, the rainforest comes alive, and flight prices drop enough that the trip stops feeling out of reach. You get the misty cloud forests and roaring waterfalls without the massive crowds.
We can spread out that roughly $2400 typical cost so you aren't paying for the whole jungle trip upfront. Let's look at how to lock in the flights, time the weather, and handle the payments.
That 0% window is a hard deadline, not free money. If you still have a balance left when the 18 months are up, interest kicks in on what you owe.