Newlyweds who tragically drowned on their South African honeymoon had described their wedding six days before as the "best day ever".
John Rodgers, 28, and his wife Lynette, 26, died on Friday after getting caught in a rip tide at Plettenberg Bay - less than a week after they walked down the aisle.
She wrote on Facebook: "John and myself would like to thank to everyone that joined us on Saturday and for all the well wishes! We greatly appreciate it and had the best day ever. Heading off today so will speak to everyone when we return."
In a joint statement their families said they had been left devastated, The Press Association reports.
"It has come as a great shock to both the Reilly and Rodgers families to learn of the sudden and tragic events in South Africa, which has taken the lives of Lynette and John.
"Our happiness in sharing their recent wedding has been thoroughly devastated. Both were very dearly loved and brought us great joy."
Lynette, a physiotherapist from Holywood Co Down, and John, an office worker from Ballygowan, also in Co Down, tied the knot in front of family and friends at the First Presbyterian Church, Holywood, last Saturday.
The body of Mr Rodgers was discovered in shallow surf on Robberg Beach by a local man at around 6pm on Friday, South Africa's National Sea Rescue Institute (NSRI) said.
His wife's body was found around 200 metres away along the same beach, the institute said.
Doctors performed CPR on the couple but they were pronounced dead.
Their relatives have requested privacy to grieve.
"We would now ask that our families' privacy be respected and we are left in peace," the statement added.
Gordon Dunne, a member of the Northern Ireland parliament who knows the family, said the close knit Co Down community would rally round to provide support.
He said: "I am very shocked and saddened by the tragic news of the death of this young couple on their honeymoon in South Africa.
"This is an absolutely tragedy and my heartfelt sympathy goes out to the family of both the young man and young lady who have sadly passed away. For a tragedy like this to happen days after their wedding during their honeymoon is beyond words.
"There is widespread shock and a real sense of numbness within the local community in Holywood at this time, particularly as the young lady was born in Holywood, attended the local schools in the area, and was from a very well respected family.
"My heart goes out to the grieving families and I trust and pray that the family may know God's help at this tragic time."
In poignant messages posted on Facebook, Mrs Rodgers conveyed her excitement ahead of her South African adventure.
She had changed her cover photo to a picture of her and her four smiling bridesmaids and thanked loved ones for coming to her wedding.
She wrote: "John and myself would like to thank to everyone that joined us on Saturday and for all the well wishes!
"We greatly appreciate it and had the best day ever. Heading off today so will speak to everyone when we return! Xx"
The Foreign Office has confirmed it is providing consular assistance to both families.
Northern Ireland's Deputy First Minister Martin McGuinness has expressed his sympathies.
He said on Twitter: "Very sad to hear the tragic news of young Co Down couple who were drowned whilst on honeymoon in South Africa. My sympathy to their families."
Former mayor of North Down Andrew Muir described the double tragedy as "horrendous".
He tweeted: "Thoughts & Prayers with families and friends of Holywood couple John & Lynette Rodgers who died in South Africa on Honeymoon. Horrendous news."