I recently stood up a personal and a business site using Claude + Astro + GitHub + Cloudflare Pages, and apart from the Claude subscription, it’s all free.

Definitely not skills that are going to be in the typical restaurant owner’s wheelhouse (not hard to learn, just not likely to care) so you’d need to figure out how to host per-business to avoid hosting everything under one account and running over the free tier. But there’s very little management or payment necessary until you get quite a bit of traffic, which is probably not likely for your average suburban sandwich shop.