So first I'm going to preach, then give you some suggestions for what I think you are looking for
Sermon: We make regular trips to Napa Valley, and stay up valley. Easier to get around. At some point in your wine growth, I urge you to switch to small production wineries where you can go sit, meet the people, drink great wine (and buy some) and not just go to the large production places (and, yes, Silver Oak and Del Dotto qualify as larger production, especially Silver Oak. And by the way, there are a lot better wines).
Suggestions: For some "different" experiences you are looking for:
-- Sterling. Go up valley., Take the gondola ride up to the winery. The tour is self-guided, but fine. They view from up high back down the valley is pretty amazing -- nice outdoor patio overlooking the valley.
--Chappellet. Drive up Pritchard Hill. Take the tour. Enjoy another great view from up high.
--Hess. Drink the wine, enjoy the pretty extensive collection of modern art that they have there.
There are a lot of great places to eat. If you want recommendations, let me know. I will suggest one place: go to Addendum. It is a shack behind Ad Hoc (both owned by Thomas Keller). Go for lunch. You walk up to a window, and order fried chicken, ribs or pulled pork. The BBQ is actually pretty good, but the fried chicken is amazing. Just imagine what Thomas Keller could do with fried chicken -- yes, he can.