After watching the premier last night, i would say for a person who loves the original Ghostbuster movie,  this is a pretty bad remake. 
But if I don't compare it to the original, I would say it is quite an enjoyable and funny show but nothing more.

watched the screening yesterday. being a long time fan since the real ghostbusters, i came with a low expectation and it was quite okay. they made Chris Hemsworth's character to be such an idiot till the point of annoyance. but the girls in the cinema think he's funny (thanks to the good looks i guess).

most of the best parts are already in the trailers except for the cameos from old actors/actress.

the CGI and effects were good but the battle with ghosts are kinda lame.

jokes are as lame as the ones in the trailer and seems to cater more to the feminine viewers. some jokes are acceptable though.

a lot of old fan service such as cameos, similarity and classic ghostbusters lines are thrown in the movie.

final thoughts, not worth to pay a premium price to watch it. Straight to DVD quality.
p.s: watch out for Egon's bust somewhere in the movie. this one is easily missed.