I think that he'll do the height, weight and neck size checks and ask about smoking and drinking. You may want to do an Epworth test beforehand, here's the link - http://www.britishsnoring.co.uk/sleep_a ... _scale.php
This will probably help to see if it is apnoea or not. To be honest, I don't think they'll do that much, when I went a few years back just to ask about snoring they did nothing. When I went last year about snoring they did refer me to the ENT clinic but he just recommended that I buy a snoremender (which worked quite well to be honest).
Let us know how you get on and welcome