Not sure if you’re staying in the city of Sonoma or elsewhere in the county, but there’s quite a bit to see, do, eat and drink in the whole of the county and adjacent areas. Three days in Sonoma will probably leave you folks wanting to return.
You mentioned you folks aren’t big wine drinkers. I think the wineries are a great way to seek out what you folks might be be drawn to, as most common varietals and blends can be found there. in fact, there can be so much, that you might have palate and varietal overload.
I would suggest doing a little homework before heading up there. Read up on wine, the characteristics and flavor profiles of the more common varietalss, and the wines that the Sonoma area is known for.
You are in close proximity to The Wine House - they have an automated tasting room where you taste wines via a card you charge up. The staff are very helpful - explain you are novices and ask a staff member to select a number of wines that they have in the room that would represent a good cross-section of what’s found up in Sonoma. Cabernet sauvignon, pinot noir, Chardonnay and sauvignon blanc are probably the bulk of what will be pointed out.
You seem to have a pretty broad palate for food, but if you are typically drawn to e.g., seafood or lamb and beef, pick your favorite dishes, see what wines pair well with those dishes and you will probably see particular varietals or blends consistently come up as pairing recs. You can then target those wines and the wineries that produce/well known for them.
Poster @Jason is an oenophile like no other. His advice would be gold. I learned so much from him on Chowhound. He does post here as well - not sure how active he’s been.
We tend to gravitate toward the areas more west of Sonoma - it’s varied in geography, diverse and beautiful. This part of the county has fewer well known wineries, but one scores high with us: Merry Edwards is known as, “The Queen of Pinot.” She has a long history in wine, in the area and has a strong reputation of consistently producing solid pinot noirs, sauvignon blancs and chardonnays. These varietals are associated with the Russian River area. If you are not familiar with the Russian River, spend some time looking up the various aspects, importance of and towns on and near this beautiful river. My wife’s favorite two wines are pinot noir and sauvignon blanc, so Merry Edwards is a slam dunk.