Both will be at full capacity.
Both FAI Cup semi finals tonight will have full houses.
Waterford will bid to reach their first decider since 2004.
They travel to Dalymount Park to take on Bohemians.
Holders Dundalk will qualify for a seventh successive Cup Final should they defeat St Patrick's Athletic at Richmond Park.
The two matches kick off at 7.45.
There are also two games in the First Division of the SSE Airtricity League.
Galway United take on Bray Wanderers,
And it's UCD versus Treaty United.