Yes. If you run a hospitality business, you have to scan visitors' corona entry passes and check their ID, ask them to register their names and email addresses or phone numbers, and perform a health check. Only takeaway restaurants are exempt from these requirements.
Registration means the possibility for visitors to leave their contact details so they can be traced should a coronavirus outbreak take place in your establishment. You have to ask your visitors if they want to register, but they can say no. You cannot force them, or deny them entry if they say no.
Besides these safety measures, it is also strongly advised that your guests observe 1.5 metres' distance.