Being able to throw the amazing willy wonka themed party, is something easy and there is a website dedicated just for such party. You will be able to learn about the cakes, coloring pages, party suppliers, Games, the contract, wonka bars and invitations. The party can take some time to be planned but the end result is going to be what you are looking for. You should start by deciding if you want to go for Willy Wonka and the Chocolate factory of Gene Wilder Version or Charlie and the Chocolate Factory of Johnny Depp Version. You can ask your friends about what they like more.
The invitation is the first thing that will let people know that you are planning for a willy wonka themed party. When you send an amazing invitation, the kids will be excited at once. This is also the time that you can make sure that all kids watch the movie since it will be useless when the kids had not watched this movie. The concept of your invitation card should be the same as the one of Wonka himself. You should send the invitation in the golden ticket within the Wonka bar. This is what you are going to reproduce.
The most important part of your willy wonka themed party is to get the Wonka Chocolate bars. However, you have to know that it is not possible to have the original bars and if you do, they will be too expensive. The alternative is to get custom poured bars made in the local store. You should get small candies that you can issue to children after every game. You need to get the box full of the candies in the movie sized box that can be given to the winner of every game. Since the gobstoppers was focused on more during the movie, you should get the box of the Everlasting Gobstopper and give it to kids during the party.