What matters most
Keep the full music set on a second device with identical files and playlists.
Points to work through
- Store key files — entrances, first dance, sponsor audio — offline, not reliant on streaming.
- Wire the backup so switching over takes seconds, not a rebuild.
- Carry spare cables and an adapter for every connection in the path.
- Test the switch-over before doors so it is a rehearsed move, not a first attempt.