Princes William (left) and Harry
Anwar Hussein/EMPICS Entertainment/Abaca
03/31/2011 at 07:00 PM EDT
So much about Prince William
's royal wedding
to Kate Middleton
will be out of the ordinary. But William can count on one simple tradition to remain intact – he'll get a good roasting from his best man
Asked about his plans for the speech – to be given privately at the reception – Prince Harry
tells the BBC
that it will be "pretty standard, hopefully. Just the same as any other best-man speech."
And for William, there's the rub: "It's me and a couple of his friends, so between the three of us, we'll make sure that we dig him in the ribs a few times and embarrass him," Harry says. "Make him lose some hair."
Harry doesn't reveal who his co-conspirators are, but they are likely to be Thomas van Straubenzee and James Meade, William's close friends from school.
Harry, who spoke to the BBC from the Arctic Circle, where he has been on a Walking with the Wounded expedition, says he and William are both excited for the big day on April 29, as things are getting down to the wire.
"It'll be a mad rush, like everything is, you know?" he says. "I'm looking forward to getting back and putting on a uniform and strolling down the aisle with him."
The scale of the event is a little daunting, he added, but that comes with the territory. "It is quite a big affair," Harry says. "I think if [William] had his way, he would love to have a small wedding with just his really close friends. But, you know, we are who we are, and the position comes with it, and the role comes with it."