I suppose that the only way to meet them would be if you won a competition or if you were involved in the film.And it is very unlikely to meet them until after finishing filming harry potter.
My friends knows someone who knows Rupert Grint, so you could just ask around the family or something.
You could try to go to a premier and you might be able to get a signed autograph, some of the cast talk to people when they are signing.
EDIT: go to a premier or a film festival where you know the cast is meeting. bug them about it. walking around known places of work is a little creepy but it works. its how tmz works. few of them host contests. or get famous yourself.
Your a millionaire or your the president
Go to a premiere
This would be quite difficult as you are wanting to meet the crew, not the cast. But if you went to the world premiere of Harry Potter and the Deathly Hallows part one movie then you could probably meet the cast and crew.
Fly to England (if your not already there) when a Harry Potter film is coming out they will have a day when all the Harry Potter stars come out and meet you and sign books and pictures.
How are they supposed to meet? Barak Obama is a real person; Harry Potter is ficticious.
Harry Potter interacts with the mermaids in the fourth Harry Potter book, The Goblet of Fire.
Harry Potter and the Goblet of Fire (The 4th book).
Daniel Radcliffe, and almost all Harry Potter cast.
Some of the cast will be there, but ONLY for the Grand Opening.
No. JK Rowling created Harry Potter. If you mean did she meet the actor, Daniel Radcliff, then probably yes.
Since Harry Potter is a fictional character who does not exist, meeting him is impossible. the most you can do is meet the actor who played him in the movies, or meet another actor dressed as the character.
No , they cannot cast real Harry Potter magic.