With bookingkit this is of course no problem. You can easily adjust the invoice details. Just go to your bookingkit account and click on "Edit".
There you can now change the contact and billing information. If your customer pays on site, you can also process the order there and add further services to the order if necessary.
Finally, click on Save and the calculation is changed accordingly. You can now send this invoice together with the order confirmation to the email address of your customer by clicking on the button Send order confirmation.
It should also be noted that, in accordance with generally accepted accounting principles, any change in the accounting data is reflected in a new set of accounts.