Be invisible. (Meaning, don’t over, or under, dress. Dress just the right amount for you not to stick out. People should be able to look at you and forget about you just as quickly)
Ensure you have enough storage for your day
Ensure you have enough battery life for your day
Make sure you are actually recording when you hit record
The more natural/artificial lighting, the better the quality.
Self preservation is key. Don’t put yourself at unnecessary risk.