Yes, that's how it will work. Think of it like being the monorail from MK to Epcot. You need a ticket to get in.
There is no monorail line that goes from the Magic Kingdom Park to EPCOT. But there are two lines that go from the Magic Kingdom Park to the Ticket & Transportation Center and then another separate monorail line that goes from the Ticket & Transportation to EPCOT and back.
I think out of all people, Robb knows. It doesn't have to get all technical.