In terms of stuff, we brought: gloves and winter hat and sun hat, 1-2 polypro long sleeves, 2 t-shirts, fleece jacket, rain gear (jacket and pants), tights, convertable pants (synthetic), 3 pairs of socks and underwear, a pair of running shorts, and I brought a lightweight wind jacket/vest. I also brought a soft lightweight skirt that I wore for sleeping and that I wanted for Venice. I have mid-height hiking boots and feel comfortable with those (there was a fair bit of mud, so personally, unless you are running, I’d go with waterproof boots and not trail runners) and sandals to wear in the huts in the evenings (the huts have a bunch if you forget yours, but I prefer using my own; bring ones that can get wet to keep your feet off the shower floors if you can, bring sandals you can wear with socks since it can be cold). For sleeping, we have coolmax sleeping bag liners, and brought normal pillow cases. You can also get lightweight sleep sacks with an integrated pillowcase. We also brought pack towels and I use a bandana as a wash-cloth. Aside from the usual toiletries (get biodegradeable if you can; who knows where the wastewater goes) we brought plenty of sunscreen, and we brought a tube of laundry soap for sink washing socks/ stinky hiking shirts and did so every couple days. I am not super minimalist, but I like being able to wear something less smelly in the evening, and since you don’t have to bring cookwear, fuel, tents, etc. I feel like everything I brought was worth it. Except maybe that extra cheese.
While I wouldn’t probably do that exact trail again (because I like variety), I had a great trip and I would very gladly go back to the Dolomites and hike one of the other Alta Via trails. Except that I got guidebooks for Greece and the Greek Islands for Christmas, and they look amazing, so I think that may be our next destination of note.