Just got back from seeing it. I'm buzzing I finally got to see the first Alien film on the big screen. Btw it was the Theatrical cut of Alien. Also it looked great on the big screen and the sound was great as well. I know Alien 40th anniversary is only a limited showing, but was surprisingly shocked that the cinema I went to was packed out to the max, every seat was more or less taking other then afew priority seats for wheelchairs. Just go's to show that a 40 year old film can still out sell Alien Covenant on its first showing.. Basically when I went to see Covenant on the first showing at the same cinema, Covenant was only quarter full.
One more thing that's great, is how dazzling and blinding the strobe light effects are when Ripley escapes the Nostromo.