I have a stamp 4Fam and I use the EU queue in Ireland. I didn't know it was possible but once an immigration officer told me that at the counter of a non-EU queue.
Application Based On: 5 year residency (Non-EU)
Applied On: August 27, 2018
Application received On: August 28, 2018
Acknowledgement : August 29, 2018
Second Letter: February 21, 2019
Approval: May 28, 2019
Date of Ceremony: ?
Date of Ceremony: June 28, 2019.
Invite Date: June 14, 2019
Application Based On: 5 year residency (Non-EU)
Applied On: August 27, 2018
Application received On: August 28, 2018
Acknowledgement : August 29, 2018
Second Letter: February 21, 2019
Approval: May 28, 2019
Date of Ceremony: ?
