Do YouTube ads work for a local venue?

No, not with the first cap: someone who wants a table or an appointment today searches on Google, not in a video that interrupts something else. YouTube comes in, if it comes in, once there is a cut of the venue and search is already leaving contacts. See whether you have a video of the door or the plate that makes sense without sound, a few seconds long. If it does not exist, there is no video ad worth running. Part of the money is put on a pre-roll in videos from another city. Nobody who sees it books in the sierra that night. The spend on search. The video, if it is made, is a piece for the listing and for social, and it is only promoted on a separate cap once search is already working.