Light refreshments will be served throughout the afternoon in the nearby village hall, where the nearest toilets are also available.
Bydd toiledau i ymwelwyr ar gau trwy gydol y prosiect, ond mae toiledau ar gael ym marchnad gymunedol Ffos Caerffili gerllaw (ar gau ar ddydd Llun) sydd ond ychydig bellter o fynedfa'r castell.