I always go to the one just over the bridge on the right hand side (coming from the train station side) forget the name but its good on a sunny day.Alternatively there is one right next to the cricket ground but that is normally packed.If you get there early there are some great ones in town - Ye Olde Trip To Jerusalem, Bell Inn, The Malt Cross (My favourite - old victorian music hall) and there is the canal house near the train station.I've got a brother and a brother-in-law in nottingham, thats why I know the establishments!Shame I don't drink!
I went to a pre-season friendly against them a few years ago and really liked a pub in the town centre. It was called something like the Pit and the Pendulum and was a bit of a rocky pub.
Anyone know if you can pay on the day?