Just to confirm the whole of B is reserved for away fans so numbers of around 5000 should be correct the following sentence translated from YB PDF "The whole sector B is used as a guest sector. For annual season ticket holders in the B sector therefore one seat per year ticket is reserved in sector D." Also anyone driving should consider the cost of the Swiss vignette around 33 euros the cost of trains is also expensive ie Zurich to Bern 55 Swiss francs each way so for 5 of us 550 francs (£360) nearly as expensive as the flights the alternative would be to hire a car for around £100 add fuel both ways plus parking about £160 so £200 more for the beer kitty lastly flights from Liverpool to Dublin(Ryanair) then Dublin to Zurich (Swiss Air) still going for £160 through skyscanners booked one yesterday