This is an entry in our Disneyland 101 Glossary: Disneyland Resort definitions in under 101 words, from Mouse Brief.
Festival Marketplaces are the special food and beverage outdoor kiosks that are exclusive to special festivals and events at Disneyland Resort. Examples of these events include Disney California Adventure Food & Wine Festival, Pixar Fest and Lunar New Year. These marketplaces feature small plates or “tasting-size” foods and beverages. Offerings may be purchased through traditional means or (frequently) with a Sip and Savor Pass.