The “Real Housewives of New York” are having some booze-related issues while filming the new season. Manhattan restaurants Ciano and Philippe refused Ramona Singer’s demands to serve her eponymous brand of pinot grigio during taping at the eateries. “She asked that her wine be there when she ordered dinner. It wasn’t on the list, but she offered to send over a case. But the restaurants refused to accommodate,” said one insider, adding: “You know how Ramona is about her pinot.” The restaurants’ rep had no comment. Meanwhile, sources said other establishments are not opening their doors as freely for filming “Housewives,” having soured on the series. “They’re trying to book locations at the last minute . . . giving the impression that others are falling through,” said a nightlife source. A Bravo rep said there have been “no issues” clearing locations outside the normal scheduling issues. Bravo has signed three new cast mates — Carole Radziwill, a relative of Jacqueline Kennedy Onassis, fashion designer Heather Thomson and Aviva Drescher — to join veterans Countess LuAnn de Lesseps and Sonja Morgan. Previous regulars Kelly Bensimon, Jill Zarin, Alex McCord and Cindy Barshop were all axed.