The Time Out Sports Bar at the Doubletree Bristol hotel hosts a Martini Madness competition March 26 at 6 p.m. The event, sponsored by Belvedere Vodka, features 16 bartender/mixologist contestants. Guests will vote for their favorite cocktail in real time by cell phone; contestants include representatives from Rooftop 120, Nolita, Wood-n-Tap and Backstage. Deadline for contestant registration is March 9. Tickets are $25 for guests and $10 for designated drivers. (Click here to buy tickets.) Proceeds from this event will benefit the Indian Rock Nature Preservation Center. Information: 860-589-7683, willowsbristol.com.