Mythmere wrote:
"The truly memorable ones don't come from the GM alone. They're the times when everything clicks and the players are clicking with the adventure. I've had it happen on adventures I was worried about because they were only half prepared. You can't predict it. It's RPG magic, and all you can do is be ready for it."
Jame,
Re-read what Mythmere wrote above and believe it. A GM's relationship with a RPG session is much like the President's relationship with the national economy; neither can do anything to guarantee success but both can screw things up enough for things to fail.
The success of your planned session is going to depend on many factors over which you have no control; mainly the moods of the players, how well they happen to be getting along at that moment, and how interested they choose to become in the story.
All you can do is present an adventure is an entertaining way (note - the meaning of 'entertaining' will change from night to night, group to group, and even hour to hour), try to smooth over any rough spots, and be flexiable. Believe me, the rest is out of your hands.
Don't worry, the kind of sessions you're craving do occur. They've even happened with ME(!) as the GM, so they can happen anywhere and at anytime.
Sincerely,
Larsen