Those photos bring back a ton of memories for me! My girlfriend and I entered Bolivia the same way back in June.. I didn't have all my entry documents in order, but the border guy sent me in and told me to get it sorted in Villazon then meet him back at the border in three hours, but it was 6 AM at this point, so there was only like a thirty minute window where I could find somewhere with wifi and a printer to get it all sorted (a pay-by-the-hour sex hotel of all places). It was crazy. I recognize that park too.. we sat there a while because some sort of children's festival was going on with parades and music. We also slept in that bus station one night on our return to Argentina-- it was literally freezing in there!

Anyway, I imagine you're heading up to Salar de Uyuni... if so, have fun! It's fucking amazing!