It sounds like you are doing the route:
- Narita Airport to Shinagawa Station via Narita Express
- Shinagawa Station to Kyoto Station via Hikari Shinkansen
If this is the case, then I think you can pick up the ticket from Shinagawa Station. From my understanding, you take the info in your purchase receipt to the Shinkansen ticket machine to get a ticket for the gates. Or you could go to the JR office and have them do it for you. I would email the station to double check.
I think that if you purchase through the SmartEX app and link to a digital Suica in your iPhone wallet, you can use your iPhone to tap on and off through the Shinkansen gates, and you won't have to get a physical ticket.