I would get there around 9 o clock and get in line for Raptor right away, because in the evening this line tends to be longer. Then I would hit Demon Drop, and then go down the Oceana Midway hitting Disaster Transport. Then hit Corkscrew, Magnum, Power Tower, and Gemini before entering the Fontiertown. Then you can grab something to eat. Then hit Mine Ride, Mean Streak, and the water rides that you want to ride. Then take the train back to Millenium Force and ride that. This line tends to be shorter in the late afternoons. Then hit Mantis, Iron Dragon, and Wildcat. Then on the way back to the front you can hit Blue Streak. Note: These are all the coasters, but you can also hit any other rides, like the spin rides if you want, with most of them having not much wait. Now it sould be around 7 PM or 8 PM when your done with all of this. If your feet are tired enough, then go on home, but as I always do, I take the train to the back of the park and make my way foward riding all of my favorite coasters again, which at the end of the day when everyone has moved to the front of the park, there are no waits for them. You can ride Mean Streak, Gemini, and Magnum, again many times in a row. Since its your first time there you should probably go see the laser light show at 10 PM over by the train station. Then maybe catch one more ride on Raptor in the dark, and then leave around 11 PM. You can go anyway you want to, but I've used this plan for many years now, and it has never failed. Have fun!
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"Stop worrying about your stupid back, and ride Mean Streak! You bunch of babies!"