Our lodge Wi‑Fi chokes every Saturday check‑in, so I’m testing an offline-first stack: iPad in Guided Access, local SQLite cache in our web app, and a Brother QL‑820NWB for wristband labels. Anyone running something similar — tips for syncing about 200 campers in under 10 minutes when the LTE hotspot cuts out, or a better way to queue prints until the WAN comes back?