Thumbs Up Diner is located at 1140 Alpharetta St Ste 1A, Roswell, GA. This business specializes in Restaurants Diners. Thumbs Up Diner is open Mon, 7am-3pm; Tue, 7am-3pm; Wed, 7am-3pm; Thu, 7am-3pm; Fri, 7am-3pm; Sat, 8am-4pm; Sun, 8am-4pm and accepts All Major Credit Cards, Cash, Mastercard and Visa.