C'est très compliqué ...
RS recommend Domaine Comte Senard for their tasting lunch ... which it turns out is unavailable to us on 23 September when we will be cycling from Nuits-Saint-Georges to Beaune; no reservations available. Their website looks like times are available, but when you make an "offer," you get a message back some hours later that they are full.
So, I started surfing the net and I see that some folks just "stumble onto" wine tastings while other wineries have reservation systems for tastings and may 'rudely' suggest that you go elsewhere if you do not have a reservation. (I don't know if it is really rude or not; if they have a system and limitations, it is not rude to say: Desolée, nous sommes complets.)
https://www.ruedesvignerons.com and https://www.tripadvisor.com/Attractions-g187105-Activities-c36-t132-oa30-Burgundy_Bourgogne_Franche_Comte.html are pretty good starting points and I am finding a great many winery/vineyard suggestions. And I received other suggestions here, earlier. https://community.ricksteves.com/travel-forum/france/alsace-and-burgundy-wineries-degustitation. Still, I don't know if I need to reserve - or not.
So, I am trying to determine whether we should make winery reservations, or let serendipity guide us. We do have some wine bars on our radar in Ribeauville, Colmar, Dijon & Beaune, but a winery is different from a wine bar. We will be cycling Strasbourg-Obernay-Ribeauvillé-Colmar and then Dijon-Nuits Saint Georges-Beaune-Beaune (out past Mersault towards Santenay/Chagny and back)
What do you suggest and what are your experiences?