The holiday lights along Fifth Avenue in Park Slope were already lit up as of last night (Monday), but the Park Slope 5th Avenue BID will be having its official tree lighting ceremony at 5PM on Saturday, Dec. 6 at J.J. Byrne Park (at Third St. and Fifth Ave.). There will be carolers, entertainment, refreshments, Santa Claus and other such things one would expect at such an event. There will also be a reading of Dicken’s “A Christmas Carol” fromm 7-9PM at the Old Stone House. We’ve already mentioned it, and will do so again, bu the Park Slope Snowflake Festival will be taking place on the first three Thursdays in December–the 4th, 11th and 18th, with shops, restaurants and bars offering specials, sales and discounts. All will be staying open late.