Here are the questions you should as your videographer:
Do you deliver your videos in 4K?
Do you use backup audio equipment separate from the DJ?
Do you use a gimbal or stedicam for smooth footage?
Do you come early to capture the venue getting setup and hair and makeup?
Do you have lavalier (clip-on) mics for capturing audio?
Do you use a drone? Does it cost extra?
If I cancel, do I get any of my deposit back?
Does it cost anything to move the date of my wedding?
Are you insured?
If you fly drones, do you have drone insurance?
If you fly drones, are your pilots FAA 107 licensed?
Do you provide additional lighting? If so, how much does that cost?
Can I have your raw footage if I want it?
How quickly do you edit and upload the ceremony from our wedding?