Watched tintin with me family 2 weeks ago, we all greatly enjoyed the film so is definitly a good choice for family viewing.
Our own criticisms was it became too "holywood" by the finale, it was a lot of noise and sparks and things moving and crashing which is usually in the middle of a tintin story rather then the end. Lets say we found the finale's tone to be untintinish, but spielberg had already taken quite a few liberties in regard to plot and cannon (especially with haddocks relationship to the antagonist, who wasnt an antagonist in the comics) and for the most part they worked, so can forgive this faux pas.
My own personal regret is that due to blending in elements of 3 books we will never get to see the classic scene when after meeting with the liutenant in the desert tintin and crew get ambushed by enemies whom i forgot, during the battle one of them sneaks behind and tries to kill tintin but misses and shoots haddocks whiskey bottle instead. This turns haddock into a god of vengeance and primal fury the likes of which would terrify even his ancestor and he charged forward with his gun as a club, seemingly putting the enemy to flight, before finding out they only ran due to incoming reinforcements from the liutenant (who received word of the ambush just after tintin had left from his camp).
Oh well pirate battle scene was well done, will settle for that.