Tintin is great, Steven Spielberg really is a master of his craft. They managed to make a modern movie that's still true to the comic, except they cut out all the racism. Probably a good thing.
My one problem with the movie is action fatigue. I felt like we should have already come to the end of the climax, only to find that what I thought was the climax was only an entertaining diversion, and there's an entirely separate climax that's even longer. By the end, I'm just tired of all the crazy stuff that's happened.
I think this happens more nowadays because of the huge budgets that movies get. If Peter Jackson wants to have a fully CGI chase scene in King Kong that goes on for 40 minutes, he can do that without going over budget. By the end, I'm not going to care what happens to them, I'm just waiting to take a break from all the craziness.