[Dr. Eckleburg]

I'm defining it here as the ability to make make decisions.

Sure, we all "make decisions." I just made a decision to respond to your question.

And that decision was part of God's plan for His creation as He ordained from before the foundation of the world.

God's omniscience and man having free will are not necessarily mutually exclusive.

If God has known from before the foundation of the world that you will wake up late for work tomorrow and miss the bus, is there any chance whatsoever you will wake up on time and catch that bus?

[D-fendr]

I just made a decision to respond to your question... that decision was part of God's plan

You're varying from the specifics of the question. In your view, could you have decided not to? Or was your experience of making that decision an illusion?

If God has known from before the foundation of the world that you will wake up late for work tomorrow and miss the bus, is there any chance whatsoever you will wake up on time and catch that bus?

There is always a chance I will oversleep. A big chance. There's a very good chance I will oversleep tomorrow. If I decide to stay up late tonight, it's almost certain. God knows whether I will or not.