Susan Deixler, a care manager for West Marin Senior Services, talked with a volunteer last Thursday at a first annual volunteer appreciation party at the Dance Palace Community Center. Organizers sent out 280 invitations to volunteers throughout West Marin who keep organizations afloat by cooking meals, chauffeuring seniors, hosting classes, and helping in myriad other ways. The event was cosponsored by West Marin Senior Services, the Dance Palace and West Marin Community Services.    Susan Adler