We are now (sadly) back from our three week honeymoon, starting in Astorga, walking to Santiago, having a whole day and two nights there, then bus to Porto for a short day trip before flying down to the Algarve for four days of sun, sand and even a dip in the sea!
The above packing list worked a treat, but then we had unusually good weather according to some other repeat pilgrims we met along the way. Only once did I have to wear everything that wasn't in the wash, that was a chilly evening in Melide, and only once did I get my silk bag out because there was no heating in the room where we slept. We stayed in private rooms, but the silk bags were our insurance in case we had to get an albergue and then wool long top and bottom, silk bag and a blanket would probably have got us through the night.
The lightweight dress was used as a tunic, after shower cover up instead of sitting in a damp towel, as an evening dress with wool longjohns under, and the only problem was it got a hole in it from the spitting fire in the corner in the Venta Celta, so that was worth it anyway
I'll definitely bring it on my next camino whether I go alone or not. The cardi and scarf were brilliant as 'others' or second change of clothes, kept me warm and brightened my mood after a shower.
We didn't really miss anything, we were warm(ish) and dry all the time and would probably pack the same stuff again next time, though I might pack another or at least not a black strappy top if we are doing the camino/beach combo again. And it seems my new husband has got the camino bug! So we will be back as soon as finances allow.
As for superfluous stuff, we never used our Altuses/Alti, but they are of course a staple in the bag anyway, nor the silk bags or tech towels that were for albergue use if needed. Other than that my husband never used his summer tech shirt when we got to the blistering heat in the Algarve, but that was purely because he bought two T-shirts in Santiago and enjoyed wearing cotton again. Oh, and we only ever used one of the Sea to Summit 68 gram packs, so might just bring the one next time.
Other than that everything was used and worked well for us and covered temperatures from down toward zero in the morning in Rabanal - there was ice on the trail and some snow still at Foncebadón - which required polar buff, windproof hat, gloves, fleece and wind jacket, to 27 degrees C in the Algarve with capris, zipped off shorts, vest and T-shirt and of course our comfy Teva sandals! All in all it worked out well, and even if we hadn't had the good weather we should have managed well with what we had, we would just have had to wear more of it at any given time.
If I had to highlight one item of clothing that was praised more and more often than any other though, it would be our pertex wind jackets, weighing just 100 and 200 grams respectively. They really do keep the wind chill out of the equation, weigh nothing and are even lightly drizzle proof. Brilliant stuff.