They can compare it to the lightning invoices.
Discussion
Have they released that data?
Not that I know of, but I don't follow this, but they should be able tonsee if the marketing targeted bitcoiners.
I hope they stack these sats. I like the idea of a restaurant stacking sats with sales instead of debt. I'm not sure how successful thay strategy will be, but I would like to learn.
I highly doubt more than a negligible number of customers pay with lightning.
The entire lightning network only has $500 million locked into it.