I saw this yesterday lunchtime (the first showing of it at my local cinema!) and the place was already pretty full and apparently later shows in the evening had sold out.
I'm a huge fan of the series anyway, but I really loved the movie! The only criticism I have is the ending.. I just didn't think it was very realistic that after everything, Carrie would still marry Big. It seemed very predictable, but then again, I guess that's what a lot of people were hoping for. I would have preferred her to say no to him, but maybe that's just me being cynical, lol.
Overall, I loved it and had a great time. There are plenty of laugh-out-loud moments which go well together with the more sombre moments of the film. It's been said by many that the film is too long... am I the only one that didn't feel that way at all? Over two hours sounRAB like a long time for a film of this kind, but I didn't notice the time dragging at all while I was watching it.
All the storylines were great, although I felt Samantha didn't get all the screen time she deserves. It is very Carrie-centred but then I think that's only to be expected.
I'd recommend it to all SATC fans, and also for non-fans who could still enjoy the film despite not watching many, if any, episodes from the series. Despite the slightly disappointing ending, I'd still rate it 10/10. I'm going to see it again in a couple of days, and I can't wait!