Group Reservations for Treasure Island Wines Tastings Weekends from 1-4pm Regular inside tasting flight: $10 per person, waived with purchase of 2 bottles. To make your group tasting reservation for groups up to 5 guests at our inside tasting area or outside picnic tables, click the "Buy Now" button below. Wine Club members do not need a reservation for the areas outside, but can make a reservation for the picnic tables. Enjoy your 4 complimentary tastings!For groups of 10 or more guests outside, must call or email for further pricing information and to reserve.