Mardi Gras, or Fat Tuesday, is the last day of the Carnival season. At the Eureka Dining Center, the room will be decorated to reflect the theme. The Accordionaires will perform from 10:30 to 11:30 a.m. Lunch service begins at 11:30 a.m. at the Eureka and Arcata dining centers and at noon at the Fortuna dining center. A special meal will be served at all three centers, which will include jambalaya and crawfish, corn maque choux, a fruit cup and king cake with prizes. Low-fat or nonfat milk is served with each meal. Menus are subject to change without notice. The suggested donation is $3.50, though no senior will be denied a meal if unable to donate. For those under 60, there is a $6 fee. For reservations in Arcata, call Vanessa at 825-2027; in Eureka, call Cathy at 443-9747; and in Fortuna, call Launa at 725-6245.