We ended up doing about half of what was planned, but having a plan was great. The weather was not conducive to enjoying the outdoor activities and so indoor swimming became a hit a few times.
Port Arthur was too far away from where we were staying. Next time (if there is one) we will stay in Sorrell or closer to Port Arthur so that we can visit the Historic Site on two consecutive days.
I adored the Royal Tasmanian Botanical Gardens - great timing being there in Spring for the Tulip Festival.
Next time (if there is one) we might do a road trip down to Melbourne, catch the ferry and travel around the island spending 3-4 days at each place.
Tasmania is a beautiful place.