Puppeteers are people who work by bringing make believe to reality. These are people who would be great at any kid's party as long as they are sending the right messages and performing the stories that you want them to. Make sure to interview and get a feel for any puppeteer you may use.
Puppeteers can be people that will bring a great amount of joy into anyone's life as they tell stories with their sock puppets. Make sure any puppeteer that you work with is using the type and style of puppet that you want. If you want a specific theme, make sure that that is something that is in their catalog.