Sanding the chairs is actually pretty easy too. I worked outside in the outdoor room, because my little hand sander doesn’t have a dustbag on it, which means paint dust goes everywhere. (Reminder: wear a good mask so you’re not inhaling it.)
I wasn’t worried about taking all the paint off so just scuffed up the paint job using 180 sandpaper.
I take my inspiration from the very-similar-looking chairs that are being refinished in heaven: