If this is (as it appears to be) an FTTP installation .....
The external date will see blown fibre tubing installed to an external point near the end of the new ducting, it will terminate in a customer splice point box, the engineer will then blow fibre from the DP node, by way of a manifold, to your splice point. Splice at the DP and at the splitter node, check for traffic at the splice point, and job's a good 'un.
On the internal date, an installer will agree a site for the ONTE*, install a ruggedised fibre lead in from the CSP to the ONTE, activate the ONTE, then connect up the router to the ONTE. Make a connection to your Mac (no problem whatsoever) sorted.
*ONTE Optical Network Terminating Equipment (the 'modem' on the end of the fibre that makes it all work)