Hi Tumbleweed,
Very sorry to hear about this sudden onset of fatigue. Hopefully it will be short-lived.
It just so happens that I did a "six-pack" of methylprednisolone, the same 6 down to 1 six day treatment you are describing. It was back in March of 2007, three months before I was diagnosed. At that time, the theory was I had a plugged up ear, and that the steroids might open it up again.
There was certainly no lasting effect, negative or otherwise. I do remember being a little "elevated", or wired up, and hearing some odd sounds in my ears. I continued going to work, and sleeping at night, so it was not disruptive. I wasn't experiencing fatigue, so I can't say for sure if it would help that.
I agree with Jan, it is quite possible to take steroids, especially short treatments, without much side effect. I also later had prednisone for two weeks, and found it a little more disruptive, mostly a funny feeling inside. Even then, I could function just fine, but I was happy to stop them when I finally got the MRI result.
I hope it all works out, I know you have been worried about this trip.
Steve