It is tricky.
By default PirateBox redirects all traffic to a single site.You would need to split traffic and send some to the internet and e.g. piratebox.lan to the piratebox. At this point you are getting into turning PirateBox into a website.
I'm not even sure how to go about bridging the Ethernet and WiFi interface of the Piratebox, but specify that not all traffic should be bridged. Maybe some selective captive portal solution or similar could work.
By default PirateBox redirects all traffic to a single site.You would need to split traffic and send some to the internet and e.g. piratebox.lan to the piratebox. At this point you are getting into turning PirateBox into a website.
I'm not even sure how to go about bridging the Ethernet and WiFi interface of the Piratebox, but specify that not all traffic should be bridged. Maybe some selective captive portal solution or similar could work.