Hi Cruise Dad, I see what you mean. I filled in all of my fun pass information. My reservation has the tab "Edit Check-In (FunPass)" where you put all the travel info/passports/etc.
Once that was complete and the reservation was paid for in full, the "View Cruise Documents" tab stated showing "Print Luggage Tag", "Print Boarding Pass" and "Print General Information".
The format has changed since my last Carnival Trip.
It looks like you use the FunPass to enter the info, and that generates your boarding pass