Is registration needed for attending the training weekend?
If you want to attend the training sessions, you need to register in advance. If you are only planning on attending the Night-O or the Sunday courses, I believe they still want you to pre-register so that they can get a good count for map printing. I know Greg Ahlswede is setting the Sunday courses so they should be good! Not sure if Greg is setting the Night -O.
Greg is setting both night-O and Sunday courses.
You must pre-register for the night-o.
It costs more (even for club members) if you don't pre-register for the Sunday courses but you can just show up and if there are maps available beyond what are needed for the pre-registered runners, you can go out. Some extra maps are printed, but not that many.