It only impacts the Practicing Roman Catholics, their funereal ceremonies and churches. So, if you are NOT a Roman Catholic and are not going to use Roman Catholic facilities nor the Services of a R.C. Priest this DOES NOT affect you.
Also practically all the cemeteries are State or Privately owned and the chapels therein are either ecumenical or non-denominational.
If you do follow the practices of the Roman Catholic Church the guidelines established by the church are summarised as follows:
You may have the ashes at home, BUT they must be in an area of the house conducive to meditation and respect.
Alternatively & ideally they should be placed in Consecrated Cemeteries or Columbaries owned by the church. Private or Public Cemeteries are also acceptable.