Suisun Valley's 2025 AVA Celebration The Suisun Valley AVA Celebration commemorates the anniversary of Suisun Valley being designated as an American Viticultural Area (AVA). In short, it’s a wine-region anniversary party, celebrating Suisun Valley’s status and identity as a recognized, unique wine-growing appellation. From Friday through Tuesday, December 26-30, 2025, Suisun Valley wine country is