Members of the Rotary Club of Tiburon-Belvedere will sing Christmas carols and collect donations for the San Francisco and Marin Food Banks and Ritter Center. Members will perform at 3 p.m. Dec. 13 outside Woodlands Market at the Boardwalk Shopping Center, 1550 Tiburon Blvd. One group will perform outside Woodlands Market and another group will be outside Peet's Coffee and Tea at 3 p.m. Dec. 20 at the Cove Shopping Center, 1 Blackfield Drive.