Considering that THE ALAMO lost a ton of money when it debuted, I was amazed that despite its faults, the film is worth watching--though historically speaking, the film is far from perfect.
Let's talk about the historical problems with the film. It is true that General Santa Ana was indeed an idiot and one of the most inept leaders you could imagine (read up about "the Pastry War" and his leg's subsequent lavish funeral and you'll know what I mean). Nevertheless, one of the problems that Texans had with Mexican rule was that it would not allow slavery--not just that the General was a dumb dictator. This important fact was never mentioned and there was a rather insulting character of a slave who was given his freedom just before the Mexicans slaughtered everyone. In the film, he chose to stay and die and even went so far as to throw his body across his master's to try to prevent the master's death. While I suppose this could have happened, it is very doubtful. I think this was distorted because John Wayne (who bankrolled and directed the film) wanted to make a super-patriotic film and talking about the slavery debate would have definitely weakened his narrative--though I am sure the Black Americans who saw the film were offended. The Texans were patriots, but flawed as well.
An interesting contrast is how the Mexicans were portrayed in the film. Santa Ana's troops were portrayed as brave and loyal and Hispanics were humanized in the movie. In addition, John Wayne took quite a fancy to a lovely Mexican lady in the first half of the film. This sympathetic view is not surprising, though, as Wayne's real life wives were Mexican.
Despite the hyperbole and sentimentality that abounds in the film, you really do have to applaud the film for several reasons. The battle sequences are rather amazing and well-done. Also, some of the many little vignettes were rather moving and interesting. However, all these little touches did make the movie very, very long--probably about 10-20 minutes too long. Had it been tightened up a bit, it might have flowed better and prevented "butt fatigue" in the audience! The film just wasn't compelling enough during the first 3/4 of the film--though the movie did end on a very high note with the final battle. I actually love long films--but this one just didn't need to be.
I think overall that the film is a mixed bag--not nearly as bad as its reputation would suggest, is very exciting and has some excellent performances, though its rather one-dimensional view of the conflict and its extreme length have to be considered before you watch it.
