We're visiting Washington DC this March with our two daughters. To sum us up, we're adventurous eaters excluding organ food; our daughters are adventurous eaters for teenagers. We'll be staying in Downtown Washington. Our food budget, that's tricky. I like good food. My husband takes the long view; that is, spending $200 for dinner would be money better spent on college tuition. So, any advice for good and inexpensive food?