Hello mate! first of all if this is not going to be your only trip (you mentioned it) I would recommend you to invest more and find something durable and high quality. You can also go to an outdoor store near you so you can see how they fit in your hands; I think that is important, too.

While doing some research I've found this nice site where maybe you might find what you're looking for https://www.eagleoptics.com/ There are a lot of options there!

Among the options I saw, these ones caught my attention; https://www.eagleoptics.com/collections/binoculars/products/vortex-diamondback-10x42-binocular1 and https://www.eagleoptics.com/collections/binoculars/products/eagle-optics-denali-8x42-binocular

Hope you find what you're looking for. Have a nice Trip, Greetings from Venezuela. Cheers!