I saw the movie. Spoiler-free post:
Okay it came early in Sweden, so I just got home from it. It is fantastic. Some characters didn't really get as much focus or screen-time as they needed, and the movie hurts a little from that, I feel. Otherwise, it is everything a super-hero movie should be. And storms, that ending. That frickin ending was amazing.
Standouts:
-Thanos: He is powerful, but he still has complexity. His goal is understandable, but also messed up. Along with Killmonger and Loki, the best villain in the MCU.
-Star-Lord: He feels very human, with flaws and strenghts, and might be the funniest character in the movie.
-Ebony Maw: The creepy Black Order dude. He has personality, and is the standout Black Order member. Pretty creepy, great voice.
In addition to these, Strange, Stark, Drax, Thor, Rocket, Wanda were all awesome for me. Go see the movie as fast as you can. It will leave you stunned.
Oh, and if anyone wants to know the number of post-credits scenes and their placement, it is in the spoiler-tag (I am not saying anything about the contents of these eventual credits scenes):