I am confirmed to Melbourne and they will hold that reservation for 14 days before I have to make a decision. After 14 days I either have to let the hold go or have them ticket it. If one of the spots for Orlando open up they are supposed to call me, but I had one Delta rep tell me to call every day to check. Another rep told me not to call every day, however given the fact that I got incorrect information from a rep I think I will call every day.
The good thing about the FF miles is that you do have 14 days to decide before they actually take your miles. And you can be waitlisted on several flights and hold a confirmed reservation at the same time, which gives you lots of options. However, once they take your miles and ticket you it will cost you $50 (per person I think) to change anything.
So now I sit with my fingers crossed and call everyday hoping I get the Orlando flight. But I do have Melbourne with is only 48 miles away, much better than 3000 miles.
Now the whole things starts again on Wednesday for the return trip.
Wish me luck !!!