Here is Allan Moulton' impressions of the Reel Tape Workshop:
http://www.theabsolutesound.com/articles/atr-services-reel-tape-workshop/
I personally attended and I thought it was money well spent. I am getting back into R2R after a very long hiatus. Yes much of what was presented was technical in nature and a bit over my head. In the afternoon I found the "hands on" part to be most helpful. Especially aligning the heads using the MRL tapes, Oscilloscope and the tweaking tool to adjust the azimuth of the heads.
After the presentation I was able to mingle with some of the paragons in the industry referred to in Al's article above. And at dinner afterwards I got to ask more questions that these same people answered patiently and in a fashion that I could understand.
I would attend again if the workshop was offered in the future.
LeRoy