Topic: Airport Extreme Shring with Guest Networking , Printing:
Question: Can you print to your shared printer on a guest network ?
Answer: No. Apple considers this insecure. See below.
Share the Internet securely with guest networking.
It’s easy to allow guests to use your Internet connection without sharing your password or giving them access to the rest of your network. Simply enable the guest networking feature using the AirPort Utility application and create a separate Wi-Fi network just for your friends. You can set up this guest network with a different password or with none at all. Your primary network — including your printer, attached drives, or other devices — remains secure.