I just made our ADR's on Thursday for our August 11-19th trip. I logged on a few minutes after 6 and was done by 630. It was the first time that I did the on line ADRS and it was soo much better than calling. I was able to get all of ressies that we wanted -- even LeCellier- whch I have been able to get for the last 5 Aug trips!
If you call they open at 7am. I figured I would try online first and if for some reason it didn't work I would call them at 7(which I didn't need to)
I am not sure about the Fastastic package. -- you can try calling WDW dine and ask them ahead of time if that is avail on line.
good luck!