Certainly a relevant point that affects users turnaround time.
Regarding SC parking for Tesla owners, the manager was basing the before mentioned '2 spots' on casual observation. He did not indicate this was a written policy. He told me that he usually never sees more than one or two cars charging at the same time. We know that this is not always the case and it will be less so in the future. I got the impression that he would be glad to assist any owner that needed charging, however that's a hassle that we'd all like to avoid.
I don't know what contractual obligation they might have with Tesla. I would guess that if this franchise has any discretion or control over the parking, they're likely to utilize the space to maximize restaurant traffic. Hope that there's a workable solution.
Any agreement they have is with the landlord, not the restaurant...