The ferry is frequently and you can see the 'floating' shrine too. We had two nights so had a little longer to explore fully. Here is one of the hungry deers.
Amazing! We're hoping to head to Miyajima to see the shrine... although I didn't quite think of how long travel would take - Google Maps is saying 2 hours from the airport to the island! Ah well, long day. :D
Great, loved Hiroshima and the museum is very good too. Catch the ferry over to Miyajima Island if you have time, it's very good and the wild deer are very tame. Just watch your railpass, one nearly ate it from my pocket!
UPDATE: We're in Tokyo in a few weeks, and just booked a day trip to Hiroshima (flying out early AM and back late PM) for a total of 27000 Avios and... £10.90. Booking the tickets themselves (not that we were going to do that) came to just over £1000! Thanks for this thread; wouldn't have thought to look otherwise.
Will keep an eye out, London flights would be far more preferable but perhaps that is what’s pushing the price up further