I never went through the JW pressure cooker, so my perspective is a little different. I don't get the same "triggers" that a JW gets, walking in to a service. MeneMene's succinct descriptions reminded me of a tongue-in-cheek church rating service. You might enjoy reading some of these accounts first, to get a taste how different individual congregations may be. There is very little homogenity outside the witnesses!
http://ship-of-fools.com/Mystery/index.html
My tip is that you are NOT required to conform. If someone invites you out to a bible study group or social event, there are no strings attached. Feel free to just say 'no' if anything makes you uncomfortable.
My first impressions, walking in to a Kingdom Hall, is that they are run much more like a business meeting than a church service. Similarly, they tend to use songs and prayer as a method of crowd control (especially at the conventions) rather than as a deeply spiritual experience. Music is canned.
The most unusual aspect of the Witness meeting (besides the stunning same-ness) is the sales rehearsals on stage. Now, those raised my eyebrows, and gave me my first clue that I might have walked in on a door-to-door publishing empire, rather than a religious organization.