I have multiple free tickets with accumulated FF miles but can NEVER use them since the airlines seem to black out these days for those who use their service most.

I also have a free ticket that requires a Sat night stayover before 1/1/05. I have travel plans to use it, but will not be staying over the Sat night.

Here is my question:
1) Can I use that free ticket, schedule myself to stay over the Sat night and then fly standby and pay the $50 fee? Or will I not even be allowed to fly on any other date?

2) Is there any way I can also do that with my frequent flyer miles? Redeem the miles for a later return date and then fly standby.

**almost all of these flights have room on them as of now**

Your opinions are greatly appreciated

Thank you.