William, there are circumstances that yes, you can have orders cancelled. your command can do it by requesting a change in your PRD. Usually for exceptional reasons, spouse death, child's death, etc. It may not be true now, but when I was on active duty I personally knew people who refused oders. Requested a re-issue, and got them.
I went to medical, had a PFT done where they said my asthma was pretty bad. Had a follow up with my provider today and he starting talking about medically separating me for it.
there are circumstances that yes, you can have orders cancelled.
JPOPE, This is true, but the poster wasn't asking about unusual circumstances. In my 24 Years (17 as a PN) there has never been a time that a member can simply refuse orders. This has been a myth since I have been in that simply is not true. Orders can be changed or modified for a reason, however, "I don't want to be stationed at XX" is not one of them.
There is one grey area here, but it doesn't come up often.
If you would be required to extend your enlistment to execute the PCS orders, you can opt to remain on board your current command until EAOS. Essentially, you extend your PRD to match your EAOS - but don't even think about reenlisting with PTS in place now.
And that's only a maybe. That was exactly the situation that I found myself in when on shore duty. I had nine months left and tried to convince the detailer to leave me in place. He said I was going to the fleet -- period. I asked for Diego Garcia and Iceland so I could save some money and was told I was going back to submarines. He offered me a squadron position in Italy in exchange for a six month extension. The other choice was going to be a fast attack boat and I didn't feel it would be fair to the boat for me to show up for nine months.
In hindsight, I should have called his bluff. I probably would have re-enlisted if I had actually gone back to a boat.