in form

Today was the first day of the Eat Out to Help Out scheme.
We registered last week having been undecided for a while - would it be worth the extra paperwork? Would visitors expect it from us?
It went well today though I had to keep concentrating.
Here is now what happens as a customer approaches the counter:
Me: Hello, just to let you know we’re taking part in the Eat Out to Help Out Scheme (pointing to poster) which means that if you like we can offer you any food and drinks for half price today.
Up to a point. Although it’s pretty difficult to reach that point.
Customer: Oh right.
Me: Would you like to use the scheme?
Customer: yes please/rude not to/not everyday the government pays for a cream tea/what do I have to do?
Me: How many of you will be eating/drinking with us today?
(fills in form with answer, takes order, adds it up, tells them the total and then what they should pay, they smile/shake head/add another piece of cake).
Then I pick up the other clipboard with the other form and ask for their details for contact tracing.

This is not normal.