Don't hide lav mics in long hair, you will get noise.

Use mics for people, with individual storage.

Have a good backup audio recording if you can. For me shotgun mic on camera

Mics on other devices are just for audio sync (can be leveraged in post if using backup approach).

Setup * White/black balance cards * Colour balance card (hold closer to camera), it will help between different cameras.

Use auto focus for colour balance/white balance Then fix focus! Check focus, then check again (don't want to focus on background), then if you can fix it.

Mobiles * Turn off any effects/AI * Check recording resolution