What does anyone think please?. Also, some of us are fearful of busy main roads like the N120. Are there times we would be cycling that or can it all be done off a main road?.
@LINDALICON , greetings
I walked Burgos to Leon in October 2017. In my view a significant part of that route is not at all suitable for bikes.
For example: from Tarjados to Hontanas the way is often a dirt road rutted from rain run off. When I encounter such a surface I often step sideways to have a good footing. A cyclist coming from behind may not be able to anticipate my actions and most probably I do not know (see below) that a cyclist is behind me.
For example: shortly after Hontanas the path is little better than a sheep / goat track along the hill side. The issue is you will not know where these sections are until you encounter them. Passing opportunities may be non existent and walking beside your bike may be problematic. And the opportunity to turn back more awkward than pressing on, on foot.
There are many other places after Roncesvalles, down from Alto del Perdon, after Los Arcos, ascent from Sarria, descent into Portomarin to name a few more, where cyclists just should not venture - narrow or winding or unstable surface or a combination.
You say some of your group "are fearful of busy roads". My observations include:
Where ever possible I walk on roads. And that is what I did from Carrion to Mansilla, on a not very busy N-120 or similar;
From the perspective of a walker, having cyclists on the Way is, in effect, bringing the look, feel and noise of the busy road to them;
In my part of the world, shared paths have official signage showing (vertically) an image of a pedestrian, an image of a cyclist and the text "Pedestrian Priority". And in some cases, to avoid doubt, "Cyclists give way to pedestrians";
I, like a number of older people and others not so old, have hearing loss. Often the first time we "hear" a cyclist on the Way is as they try to brush past on a narrow path.
To tie this altogether, I hope you and others of your group are content, on narrow paths (say, less than 1.5 metres wide - bring your tape measure), to not ring your bell (it may not be heard) but dismount and walk behind.
In the meantime, I wish you kia kaha (take care, be strong, get going)