A couple was allowed to hold their long-scheduled wedding reception at the San Francisco Zoo, even though the grounds have been closed since a tiger escaped on Christmas and mauled three people, killing one of them. Erica De Jesus and Mike Garcia went on their first date at the zoo 10 years ago. Because of the tiger attack, they and their 200 guests were not allowed to roam the zoo grounds Monday night and had to confine their celebration to a hall near the entrance gate, where a sign warned that lions and tigers would not be on display until further notice. A half-dozen guards were on hand to make sure no guests wandered off. "That's all right," the bride said. "We're starting our new life and we hope for a new life for the zoo, too."