What Goose17 just told you is HUGE. I ran the same gauntlet during a 7-day opt, establishing a retirement date, and then as I got closer to that date, they tried to "re-adjust" the date due to some grandfathering that they thought they had overlooked. In every case, I had to pull out the AF and local regs and ammendments to show them what it said. The Separations/Retirement office was staffed with one SSgt, a SRA and an Amn. You need to really, really look out for #1 in what will probably be the most important "career decisions" of your life.
The military makes it very easy to get in...but very confusing and sometimes difficult to get out. If your Pilot office doesn't have a binder full of all the appropriate regs about ADSC's, Assignments, Separations, Retirements, etc...then you get yourself online at the AF Pubs site and print them all. Then go through them with a highlighter and make sure the important stuff is annotated. I built ours, prepped it and took it with me every time I went to the MPF. (A nice side benefit is that you become the office expert and the rest of the gang will buy you a beer or two to learn what you've found out in your research...)
Found a bunch of stuff that had changed with an FY2000 adjustment to the regs that pretty much shook up all of us "old-timers" (0-5's and 0-4's) who thought we knew what was going on. The biggest one came from the assignments reg that changed the assignment cycle. Been a while, but I believe the assignment cycle actually starts 3-4 months prior to your notification to start looking for a job. And...due to that earlier date (which you're not told about)...you can be tagged with a non-volunteer assignment before you get your papers in for a normal separation/retirement. If you have any ADSC remaining and are unable to 7-day opt...you get the assignment with the 2-year commitment attached. Sort of a modern-day shanghai...you don't even get free drinks out of it.
And...as I used to always counsel our youngs pilots/navs when they started looking into this stuff: "The USAF really, really, really, really wants you to stay in and be a career officer and continue your path up the ladder towards senior officer. However your contract with your country is fulfilled, so you're free to make any decisions that are best for you and your family. Now, what would you like to chat about?????"
So, do your homework, take complete charge of your separation/retirement and good luck...