It is not pre-registration in that you are not booking a place. It is a way of ensuring that you are registered in the TOM database which avoids many problems that can delay the tournament start.
We will have a few players without player IDs and a few with incorrect age groups. This is inevitable with an open tournament, inevitable when so many of the UK players have not activated or corrected the details on the pokemon.com website.
---------- Post added 05/28/2011 at 01:59 PM ----------
And filling in the registration now is leaving it FAR TOO LATE.
I very much doubt I'll get any chance to check the form again.