There is an app developed in Mount Maunganui and being used here in Tauranga that may help.
Rising Tide in the Mount is using it – you will sit at the table, place and pay for your order online, and then it will be served to you.
May be an app you can use?
P.S. I have no connection to the app above…just saw Rising Tide put a FB post on it and used it to order from there during lockdown.