The hall isn't that big really, and didn't get crowded until after four last year. I'd intend to occupy a table as close to the bar as possible. We should be arriving about 12.15, and staying until 7.
Edit: note that the venue isn't the big King's Hall you can see from the road:
[img:1hk1okpi]http://www.kingshall.co.uk/images/darkhall.jpg[/img:1hk1okpi]
It's a smaller shed round the back, accessed to the right of the main hall. The way in should be well signed.