HTV-X docking (capture, actually) in a few hours:

Not without work to prepare them at least, but I don't know that they ever intended to use the radial ones, at least by the time of launch. The forward facing one I would imagine is straight up unusable even if Rassvet is clear. Rear also has it fly under Zvezda + whatever is docked there, might still be a risk factor, maybe not. The other two are more conventional I guess, with some care taken with the solar arrays.Well technically, Prichal has four unused docking ports, although I'm not sure if they could be used by visiting vehicles.