STAMFORD-One of the oldest Christmas parties in Stamford kicked off just like it has for well over a half-century when Santa arrived in a police car. No, it wasn’t a case of Santa having too much cheer, but rather Santa bringing cheer to about 75 ARI clients at their annual party and gift give away Friday afternoon. Gerard Gasparino, ARI’s manager of development and recreation, said all of his “consumers” look forward to the party and receiving gifts that are especially purchased for each recipient.