Won't go into the questions to ask thing, cos I just don't feel like an expert. But in terms of what to expect in the appt, I have a laugh because I feel like I get around 2 minutes with my OB - lots of people get weighed (I don't, he just doesn't do this, which is fine by me), I always get BP measured, he has a listen to the heartbeat using the Doppler (& you get to hear it too, it's soooo cool, the best part), sometimes I think that they take measurements of your stomach, and sometimes a bit of a poke around. And if you've had any scans/tests, mine usually runs through these. I think that the reason my appts are so short are because I'm as healthy as I can be expected to be, so there's not much else to talk about - which is a good thing.
In terms of birth plans - go with an open mind, and read as much as you can from as many different places, so that you know & understand what your options are. & when you get to your hospital classes they give you more info. & ask lots of questions on BB - there are so many people here to help, it's just great.
Bookmarks