For any of you guys who decide to brave the crowds this new year´s eve in La Puerta del Sol , bear in mind that the police will be on hand to stop anybody entering the square with glass bottles ... I´m not sure that it will extend to plastic bottles too though the the thought of drinking champagne from a plastic bottle does not appeal ! Best to take your grapes down there and then dive into a bar or appartment to partake of some champagne/Cava .