I occasionally attend Sunday meetings, either just for curiosity or to placate my dear wife. I've recently developed a method whereby I tune out all the proceedings from the platform and audience, and take to reading Acts (I've just begun to learn a great deal about Roman history via audio CDs from The Teaching Company, which I listen to on my long commute to work).
The lecturers on these all highly praise the accuracy of the book of Acts and all the gospels in general, in terms of their accurate depiction of life in Judea and the Hellensitic kingdoms under Roman rule.
So... I read through sections and refer to the footnotes, to identify characters, customs, etc., and have found it quite rewarding and antidote to paying attention to the meeting. My wife often has to poke me in the ribs when it comes time for the closing song and prayer! If you MUST go for whatever reason, try it, you'll like it. You could do a lot worse!