If you are visiting PRONI to view a specific archive it is advisable that you contact PRONI in advance to check availability, particularly if your time is limited or you are travelling from overseas. The address is: Public Record Office of Northern Ireland (PRONI) 2 Titanic Boulevard BELFAST BT3 9HQ
If I had the choice, I'd be going to Ireland.
If you are visiting PRONI to view a specific archive it is advisable that you contact PRONI in advance to check availability, particularly if your time is limited or you are travelling from overseas.
The address is:
Public Record Office of Northern Ireland (PRONI)
2 Titanic Boulevard
BELFAST
BT3 9HQ
Do what you can online and have a nice holiday :)