It's an okay set of theatres, there really isn't much you can say about the theatres - they exist, they are well placed, there's plenty of them, there's an IMAX screen, and the seating is comfortable. Now onto the amenities. They are questionable at best. I do not get thrilled over the idea of being able to get a beer before going into the theatre, it's not the first thing I crave for when I enter such an establishment.
Toilets are far apart, so that's one downside. Staff are not very good at crowd control. Whenever I've seen a blockbuster there (last week HP pt2 in 3D) staff are horrible at trying to maintain a certain semblance of queuing discipline. Another downside, and this is endemic in most theatres - overpriced food. Do I really believe that a medium diet coke (12oz) is worth $4.25? There's a reason people sneak food & drinks in, and that is due to the pricing.
Location is not the best, as others have noted. Escalator is horrible to go on if one is terrified of heights - so thank god for that elevator.
One dangerous aspect, and the designers never thought of this when constructing the place -- the exit is at the foot of the down escalator. People have this tendancy of getting to the bottom and just standing there while they rifle through their purses/rucksacks. There is always the potential of a "pile up" and it has happened on a number of occassions.