I'm going to be critical, but not because of any bitterness over them leaving my name out as an exec producer even though I have a card stating I'd be there.
As I watched I kept wondering why it looked like it was shot with a Handycam, and then I remembered I was watching the 2D version of a 3D movie and it's always best to shoot deep focus for the effect.
Charlie is a darned good director and Danny Draven is a talented editor so there's not much to pick on as far as the technical aspects (other than the really cheesy day for night shot at the start).
What it comes down to is story. Or rather lack of story.
I guess it's because the point of making the movie was to showcase the 3D but it ended up looking more like an episode of PeeWee's Playhouse. "Look! Here comes another character! Come on in and talk and then take a hit on the big bong! Look! Here's Robyn Sydney in an apparent cameo! Come up to the counter set and tell your jokes and get out!" Intersperse that with pointing things at the camera to justify the rental of that massive two camera 3D rig.
That's about as critical as I'm going to be. After all, the characters are likable, the acting is much improved over the last two movies, and when I finally get to see it in 3D I'm sure I'll enjoy it a lot more.
One nitpick though, towards the end when the characters are sitting around the head shop (after the 76 minute mark) you can see a member of the production crew.
As the camera pans to the right and away from the table you'll spot someone's unruly head of hair popping up in the lower right part of the screen.
I had to watch it twice to make sure it wasn't a hairy couch or other set piece.
I don't want to give anything away to those that haven't seen it, but the ending or at least the resolution to the problem was a little unsatisfying.
Maybe they'll sort it out in the next movie.
And I'm not upset at all that I didn't get my credit