We try as many new restaurants as possible. The San Francisco Bay Area is restaurant heaven for gastronomes, LOL. When eating locally, about half the time we will go back to a restaurant for something specific we have a yearning for, but the rest of the time we'll go somewhere new to us.
Friends think it's amusing we travel regularly in a big circuit around the Bay Area, just to visit restaurants elsewhere. We go for 3-5 days, and eat out twice each day.
The Napa Valley is actually not one of our favorite destinations, since we don't drink. We normally only go once a year. But there's been so many new openings, we'll probably go at least twice this year, because we couldn't fit in all the restaurants we wanted to try. On our spring 2018 trip, out of 12 restaurants, 5 were return visits and the rest were new to us.
We just returned from a swing through Sonoma County, one of our favorite destinations. Sonoma is much bigger than Napa geographically, so we generally divide it up into three different sections. Even so, driving distances can be long. This time we stayed at the south end and also hit the coast/Russian River area, which is always gorgeous this time of year. We did 6 new restaurants and 5 returns.