As someone who worked a job like that, no one at the service window wants to be part of your stupid video.
They don't want you to do something extra, or entertain them, or sing them a song.
They want you to shut the fuck up, take your shit, and leave.
You are not making their day any better by reminding them that you can do whatever you want to them and they have to grin and bear it or else face corporate punishment.
The less human interaction you force upon them, the better.