La Guajira is worth visiting, pure and wild nature, a place with wonderful corners, with its Wayuu peoples who survive as best they can, forgotten by government authorities throughout history, their resources exploited and mistreated, today they try Get ahead as always.
I do not recommend contracting with Sumaj Tours.
We were aware before booking the tour that it was not going to be a comfortable destination, since there are many hours of driving, intense heat, not very comfortable rancherías with questionable cleanliness and repetitive and basic meals.
Before contracting with Sumaj Tours they seemed very serious and organized to us, the reality was quite the opposite.
They took us in a Toyota 4x4 that was not in condition to be used: window glass that went down and then did not go up (luckily solved after 2 hours of driving in intense heat), handbrake that did not work and every time As we were getting off, it leaned back, putting the passengers at risk, the trunk did not open with the appropriate inconvenience (solved on the second day of the trip), the fuel pump was malfunctioning and we came back bouncing and very slowly. The vehicle smelled a lot of gasoline because they were transporting a can in the same cabin where we were traveling, these gases are toxic and it is not the correct or legal way to transport it.
A trip with so many hours of travel, I was not looking for a driver who would simply take me from one place to another to take the photo, but a guide who could really tell us travelers about the place, its people, etc... The Sumaj Tours agency assured me before booking the tour that all its drivers were Baquianos. I'm not going to doubt it, we had one who didn't speak or tell anything interesting. Missed opportunity to get to know this wonderful place better.
At the exit from Riohacha there was a police checkpoint, the driver turned around on the road and exited through another area of Riohacha, this is not normal to do if everything is in order and the vehicle is in order. Apart from the fact that he drove in flip flops, and other times completely barefoot, this is not allowed by Traffic, simply because it is not safe.
It is not possible that Sumaj Tours did not know the condition of your vehicle, and in any case I see that they do not carry out any checks. In this case they knew it in advance from the conversations they overheard with the driver.
Therefore, my recommendation is that you look for another agency for this tour other than Sumaj Tours.