Jurors were told he had been at a pub with a man who was the father of a third girl - a friend of the alleged victims.
Both men arrived at the home at about 02:00 and the defendant asked the girls how old they were, the court heard.
Mr Alford briefly left the property, but came back from a nearby petrol station with a bottle of vodka, the trial was told.
He asked the 14-year-old girl to sit on his lap after going into the garden for a cigarette, which she described as feeling "a bit strange", prosecutors said.
The alleged victim said he had sex with her in the garden and later in a toilet.
"He asked her 'Do you want this babe?' and she said no," Ms Whitby said.
In a video recording of her interview with police, shown to jurors, the 14-year-old girl said "he raped me".
She said she did not know Mr Alford.
The alleged victim said she had never had sex before the incident, and that: "I told him to stop because I didn't want to have sex with an old man".
She asked him to stop "three or four times", she claimed.
Both girls did not say anything about the alleged assaults immediately after they happened as they had been drinking "a fair amount of vodka", Ms Whitby said.