I went to see fantastic beasts at 3:20pm on a Thursday a month after it came out. I arrived 30min early, because I was already nearby.
The "hall" was very clean and spacious with lots of seats where you can wait for your movie to start. They have a few arcade games as well as 2 massage chairs (2$ for 5min).
Because I went to see the movie at a fairly "unpopular" time, we were a total of 6 people in room #6 for the movie.
The quality is very nice and the volume is perfect. Not loud to the point that your ears are ringing after you leave, but definitely loud enough to give off the full effect.
The price was AMAZING! 5$ for the movie! Wow wow wow!
I didn't get anything from the concession stand, but the person in front of me got 2 big bags of candy for 5$ (if that interests you).
I don't know if it was just at that time, but they didn't let us in till 10min before the movie, since the previous viewing wasn't over yet and there wasn't a lot of previous (4 if I recall correctly).
Overall, very nice deal and a very efficient movie going experience!