Prince Harry has used interviews for his 21st birthday to say he loves "to bits" Camilla, Duchess of Cornwall and apologise for his Nazi uniform stunt.
He said Camilla was "not the wicked stepmother" but a "wonderful woman" who made Prince Charles "very, very happy".
He also said his choice of a Nazi uniform for a fancy dress party earlier this year "was a very stupid thing to do and I've learnt my lesson".
The prince was expected to spend his birthday on Thursday on Army training.
"I'm not having a party. I'll probably be in a ditch in the middle of Wales. I might let off a party popper," the prince said.
He said he was both a party prince and a caring one, adding: "If that's a problem with anyone, then I'm very sorry.
"Does everyone expect me to be just the caring person and not to have a cigarette, not to have a beer?"
The prince said: "I've grown up, everyone's got to grow up. But there's something inside me, I'm always going to have that little sort of - how do you say? - child streak."
About wearing the Nazi desert uniform complete with swastika armband in January, the prince said: "Maybe it was a sign of my own immaturity. That was then, this is now.
"I am becoming 21 - something like that I will never do again. It was a stupid thing to do. I think it's part of growing up."
The interviews were conducted at the Prince of Wales' Home Farm, in Highgrove, Gloucestershire.
Prince Harry said the Duchess of Cornwall was "a wonderful woman and she's made our father very, very happy, which is the most important thing".
"William and I love her to bits.
"To be honest with you, she's always been very close to me and William... but no, she's not the wicked stepmother. I'll say that right now."
Prince Harry also said it was "amazing how close" he and his brother had become.
"Ever since our mother died, obviously we were close, but he is the one person on this earth who I can actually really... we can talk about anything.
"We understand each other and we give each other support."
And he described his girlfriend Chelsy Davy as "special" and "amazing", but was reluctant to further discuss his private life.
About press attention on their relationship, the prince said: "Sometimes you deal with it, sometimes you don't deal with it.
"You find yourself shouting and screaming at all sorts of different stuff."
Prince William last year said he would not want to be kept back from war zones if he joined the armed forces, and his younger brother has agreed.
"There's no way I'm going to put myself through Sandhurst and then sit on my arse back home while my boys are out fighting for their country.
"That may sound very patriotic, but it's true. It's not the way anyone should really work."
He also reiterated his desire to carry on the humanitarian work of his mother, Diana, Princess of Wales.
"I believe I can fulfil that - I would not have said it otherwise."
Prince Harry last year expressed that commitment while working with Aids orphans in the southern African country of Lesotho, and in the new interviews said he hoped to do more work there.
"I'm not going to be some person in the Royal Family who just finds a lame excuse to go abroad and do all sorts of sunny holidays and whatever.
"I mean, I'll do the best I can. Yes, Lesotho will probably play a very major part in that."