Um, sorry but Disney's adaptation of Alice in Wonderland is wicked. I'm a big fan of the books. If you have read them yourself then you will know how crazy they are and how good animation is at representing the nonsense world Lewis Carrol portrays. Far from ruining it, they manage to keep a supprising amount of the aubsurdity, humour, and sardonic satire that you get in the original novels, and then go on to bring it to life in a pretty cool way. Of all the Disney films, I think it's about the only one that parents and children can both sit through and be equally entertained.
As for them using content from both books, (and making up some stuff, and indeed ommiting certain parts) well of course they are going to use both "Alice in Wonderland" and "Alice Through The Looking Glass", if they didn't do that then you would loose a lot of great characters. Keeping "Alice in Wonderland" as the title is sure a whole lot better than saying "Alice-in-wonderland-and-through-the-looking-glass", or even worse making up a whole new name like "The Alice Chronicals" or somthing. It's not like they don't state clearly that the film is based off both books in the credits. It's true that they don't stick completely to the books, but the books are chaotic (and also contain references to 19th centuary personalities and so are lost on a modern audiance). I think its pretty impressive that they were able to stay as true to the books as they did, the story certainly doesn't lend itself to a film, and portraying the disorder and chaos of the books in a way that doesn't completely baffle the audiance is an achievement in itself!
Getting "baked" and watching it on the other hand is a perfect way to butcher and trivialise it. Saying it's only good for getting stoned to is pathetic.