I'm surprised I haven't come across this before. The project did manage to get a decent media coverage:

https://www.gladstoneobserver.com.au/news/agnes-water-first-town-in-australia-to-embrace-dig/3430828/
http://www.abc.net.au/news/2018-06-03/australias-first-digital-currency-friendly-town/9828306
http://www.dailymail.co.uk/news/article-5799951/Queenslands-Agnes-Water-beach-town-pay-holiday-bitcoin.html

That, on its own, is some marketing success (for such a small town).
I've never heard about the payment processor TravelByBit, if legit - they're doing a great work.