One more added to this list - it is a nightmare currently and I can't seem to find any viable solution. It is very difficult to justify an Google Ad spend without knowing conversion rates. Acuity seem to refuse to engage on this issue as they just say they can't offer support on third party integrations. This seems very short sighted as without the ability to track I'll likely have to look at other booking solutions.
Does this issue apply to both Acuity and Squarespace Scheduling? - The acquisition / cross over here also seems to be a mess.