HeavyG, reading this may seem really silly, but I will tell you something that I told my niece the first time she flew, and she said it really put her at ease when she experienced it. You will most likely experience turbulence during your flight, and if you look out your window, and you see the planes wing bouncing up and down like it's going to break off, relax! It's designed to do that.
She flew from DFW to Memphis, TN., and she said that was one thing that would have really freaked her out had I not told her about the wing. As others have said, on takeoff when the plane begins rotation (where the nose of the plane lifts up in the air), there will be a moment that feels like the floor falls out from under you, and the plane will quickly leave the ground. That may mess with you the first time you takeoff, but it's kinda fun. :laugh2:
Have a great flight, and enjoy the view.