Filming it is the right call. This way there can be no doubt as to what happened if someone is looking for the burger later, and they can get it comped by the restaurant without issue should they want another.
And with the whole table empty of people they had either already finished most of their meal/weren't that hungry, or it's a fake video.
Yes, more when going to bed than waking up though.
Let me introduce you to "I'm The Villain In My Own Story": https://youtu.be/UhzN7SfnNeY
From the excellent (though sometimes emotionally heavy) show Crazy Ex-Girlfriend. It's certainly not the best song in the show, but the most relevant.
And in the artery to that vein, let me present "I'm A Good Person": https://youtu.be/O4hh1YhDfbA
(Edited to clarify these are not the best songs in the show, there are better songs and in a wide variety of genres!)