I am building a new Wordpress website for an old boutique hotel.
The hotel does not have the ability to process credit card payments (yes, very old).
They would like me to setup a system on their website so that they could create / publish invoices for guests who can then access their invoice via the website and pay using their credit card / paypal.
What would be the best way to set this up? Obviously i'll need to make the invoices private, so that guests cannot see other guests' invoices. Any advice would be greatly appreciated, thanks in advance.