Welcome!
There would be a lot of work to get FTO owners from different countries all together in one place but I'm sure it could be done. Organising it well and having a date date far enough in the future so travel tickets will be cheap will gain more interest.
I know the S2000 owners club in Ireland organised a trip a few years to the actual factory in Japan where the S2000 was made. They got the cars shipped over (the more that go more = cheaper for everyone) and then flew over.
If you could organise something like that it's be fantastic. You could get people from Australia, Ireland, UK and New Zealand interested in a trip like that.
ANyway, enjoy your FTO!