When I went out, I didn't only meet a bunch of cool people, but I also found out that, because of a national holiday on the day after (Monday), most bars and such stayed open until around 04:00 - 04:30 this Sunday.
It felt like most of Reykjavik was out partying and everyone was super friendly and happy.
Me, and my newly found band of brothers (second picture in the previous entry), started bar hopping.

We did literally party til the sun came up.

If this night is any indication on how the rest of the trip will go, It's going to be awesome!