Just looked up the cup rules on Mun FA website:
In Munster Junior Cup rules (
http://homepage.eircom.net/~munfa/docs/CUP-rules.pdf)
5. In the semi-final ties the net gate receipts, after payment of all expenses shall be divided in the proportion of one-third to the association and the remaining between the two competing teams.
In the event of a replayed semi-final the receipts after the payment of expenses shall be divided in proportion of one-third to the association and one-third to each of the competing teams.
So I guess this means the semi's will go to replays - but it doesn't state it very clearly, as item 4 on list says 90 minutes + 10 minutes each way (if needed) + penalties (if needed). It seems to suggest that the semi finals can go to replay but no other round???