The Duke and Duchess of Cambridge were unable to inspire the Welsh national rugby side to victory on their first visit to the country since announcing they are expecting their second child.
William and Kate, who lived in Anglesey while the duke was a search and rescue pilot at RAF Valley, took in a packed itinerary from the moment they arrived in North Wales this morning.
The couple ended the series of engagements in Cardiff where they watched the home side slump to a narrow 28-33 defeat to Australia.
William, vice patron of the Welsh Rugby Union, then met injured players and their families at a reception after the match, while the duchess, who is 15 months pregnant, retired for the evening.
The day started on the Pembrokeshire coast with a tour of the Valero Pembroke Refinery, having been greeted upon their arrival by hundreds of well-wishers who waited for hours in bracing winds and rain.
Kate wore a long light blue Matthew Williamson coat and heeled black boots while William wore a dark suit and tie.
Both William and Kate sat in front of screens and pressed a button to create their own gasoline blend. "Shall I do one and you can do the other one?" Kate asked William.
After she pressed the button, William laughingly told workers: "We are waiting for the red light to go off."
The group clapped loudly after William had also pressed his button and told the couple it would take 15 hours to create the blend. William replied: "We will do the night shift."
He asked whether anyone would be watching the rugby match later, which the royal couple would later attend. "I am sure one of these (monitors) can be turned into a big screen," he told them.
The couple then attended a reception in the refinery's Fire Hall and met members of community organisations supported by the refinery.
Tracey Olin, founding member of Pembrokeshire Action to Combat Hardship (Patch), spoke to Kate about her organisation.
"It is an incredible honour to meet the duke and duchess and we are so thankful to have the opportunity," Mrs Olin said.
"It was really lovely to be able to tell her about what we are doing and our new project.
"She is just normal really but ever so beautiful, even more beautiful than the pictures show.
"She put us totally at ease and it felt like we were talking to anyone, not the future queen of England."
William, 32, and Kate, also 32, then watched three performances from the Young Actors Studio.
Ed Tomp, refinery general manager, presented the couple with a Valero truck, a copy of which was given to the Queen Mother for Prince Andrew to play with 50 years ago.
He said the truck was a gift for 15-month-old Prince George but suggested it might be more played with by his father.
William joked: "Oh I don't think we will let him see this, it will be in my office."
Kate received a posy from Brooklyn Howell, two, who attends the Special Needs Assessment Playgroup (Snap).
The pair unveiled a plaque and a painting before signing the same visitor book the Queen Mother wrote in during her 1964 visit.
They left the refinery to loud cheers and screams from the waiting crowd, many clutching Welsh flags.
Arriving at Cardiff's Millennium Stadium by helicopter, the couple wore red poppies as the rugby international began with a Remembrance tribute.
During half-time the pair met injured servicemen in the President's Box, while William visited injured players after the match.