What matters most
Keep the full music library on two devices, with the same files and playlists, ready to swap.
Points to work through
- Carry spare cables and adapters for every connection in the signal path, not just the main one.
- Know the venue’s power layout and have a plan if a circuit trips mid-event.
- Keep an offline copy of key files — first dance, entrances, sponsor audio — that does not depend on streaming or Wi-Fi.
- Write the contact chain: who to call if the DJ, the venue AV or the power fails.
- Test the backup before guests arrive, not for the first time when something has already gone wrong.