I'm a Munster man, married and living in enemy territory and will be at Croker in my red shirt on Saturday evening, next to my wife in her blue shirt. We were at Landsdowne Road in 06 and once we saw the draw for the semis that year, we sorted out flights and tickets for the final on the grounds that at least one Irish team would be there. Have to say, Mrs Sox enjoyed Cardiff that day. Often been to Donnybrook and the RDS to watch Leinster and have no problem shouting for them, except when they are playing Munster.
As for the Munster Bandwagon and a previous posters comments around 200 people in Dooradoyle in 99, he's right, no one watched inter-provincial rugby until the Heineken cup and Celtic league came along. Instead Limerick people watched their club and you could get 5-10000 for a Limerick derby in the AIL, especially if Garryowen, Shannon or Young Muster were involved. The difference in Munster is that as the AIL declined in quality, perople moved to watching the province and not the club. There is an arguement, that as no one watched AIL rugby in Dublin, that the bandwagon is in the Pale.