There are a couple that are very much for those that will only ever go somewhere in the GBG, but some of the other ones are decent.
Including one place, when we last played there on a Saturday, that for its Oktoberfest, had a DJ playing Oompah music.
However the DJ was a dwarf in Lederhosen!!
Ipswich is really good for pubs.
Granted they are all away from the ground. Trick is to get a cab to the furthest one at 1030 and drink your way to the ground.