Updating all my Europe threads! (While waiting for firmware to update on scanner...)
I ended up getting a back very similar to Kpbs actually! I tried the fanny pack linked in the post above and it was honestly just too small.
https://www.amazon.com/Sling-Bag-Cro...NsaWNrPXRydWU=
DH and DD found this bag on an amazon search 3 days before the trip. We ordered it and SURPRISE! I LOVE it! It was bigger than I thought I wanted or needed but it was truly the perfect size. I could wear it in front of me on the Metro in Paris or on my back while on hikes and longer walks. It has a little compartment in the BACK that held my wallet and passport and it felt very secure. It is feels REALLY nice. The straps are soft but very strong/sturdy.