Napa Valley - last minute dining reservation?
 

My husband and I are headed to Napa the first week of June. It's our 20th anniversary, woo-hoo. We planned the wine shuttle, and the trip to the coast, and the day in San Francisco, and the A's game, and Alcatraz, and a trip to see my HS friend DJ Purple in the Mission. But, whoops! we forgot to make a dinner reservation in or around Napa for our actual anniversary. We are of two minds: blow it out big time, $450 or so (but perhaps we are too late to make a reservation?). Or find a cheaper romantic hole in the wall in the Napa Valley (if such a place exists). Any ideas? Thanks