Hi,
Not a lot of pubs around the ground. There's The Beacon on the Mount Farm estate just behind the stadium which has generally been used by the home fans, and is welcoming to away fans, but it's a dump. A 10-15 minute walk from the ground is The Enigma Tavern; at Ikea, facing away from the ground, turn left and there's a roundabout. Go over it and then fork right (there's an underpass if walking). Head under the bridge and keep going straight on, you'll see it on your left.
If you fork left/straight on after the roundabout, you could head for Fenny Stratford which is about five minutes walk and has a couple of pubs and a chippy.
Also, is there a fan that would be interested in doing a pre-match interview tonight or tomorrow? For www.mkdons.thefootballnetwork.net, cheers.