@bootscobler As far as reserving/winging it, it's impossible to predict how many walkers there will be on the Portugués this spring so I re-planned my canceled 2020 Camino by reserving everything through booking.com. I was surprised that many places I'd reserved in 2020 were filled three months ahead! But lately I've been contacting albergues and, honestly, they don't know either what to expect! So I'm inclined to keep the booked rooms for long walking days when I'll arrive late, and count on albergues when I know I'll arrive around mid-day. I've done that on past walks and it's given me peace of mind.
Regarding weather and clothing, there are lots of forum threads on this. I have a kind of standard kit bag after 4 spring and fall caminos -- a sequence of layers from t-shirt, to sun-protective long-sleeve blouse, to merino pullover, to an old Patagonia puffy, and a lightweight Gore-tex rain jacket that is both rain and wind-protective but also "nice" for the cities. I bought an
Altus in 2018 (search forum to find out about this) in Sarria and, boy, was that smart, as it rained the rest of the way to SDC! I have two pair quick-dry pants but try to wear the khakis every day and save the black ones again for "nice." Thai "elephant pants" and Teva sandals for after-walk lounging, wine drinking, and walking to shower. Everyone has their own favorite number of socks. The key is .. everything hand-washable and quick-dry! But do clothing searches and get lots of suggestions.