OK, since I am going to be optimistic and assume winery tours can be a thing again, I highly recommend a tasting at Hendry in the Napa valley. The room holds about 10 folks, so you have to schedule in advance. The owner charges a fee to weed out freeloaders, and it can be applied to bottles of wine (around $30 a bottle), so it is a splurge. However, he does a very educational tasting, which shows how order of tasting, saturation of selected taste receptors, etc affects enjoyment of wine.