According to the festival website:
The International Mead Festival (an event through the International Mead Association) is the worlds' largest and most prestigious mead competition and festival. This event hosts both a public tasting of commercial meads and a private judging of commercial and homemade mead entries.
For more information on how to volunteer, click "original article" below.
For more information on the International Mead Festival, visit the website at: http://www.meadfest.com/