I am looking for a place near Columbia, MD to plan a Sunday lunch to celebrate the birthdays of 2 12 year-old cousins. There will be about 10 of us from Baltimore and D.C. Most of the group really appreciates good food but in honor of the 12 year olds we would rather not stray too far from the mainstream. We also have to keep the vegetarians amounst us happy. Any suggestions, maybe dim sum or other Asian?