I'll be going there for 3 weeks in 6 weeks. Have booked there and back passage on the ferry and can report that bookings (particularly for cabins) are very tight. It seems to me that there are plenty of chargers around but given a lot are one or two stall and from Plugshare comments there might be some waiting if one is unlucky. I'll also be interested in any recent comments from people who have done the trip. We plan on about 1,400km of travel within Tassie.