One of my friends brought a sword with a hard pommel and I seem to remember seeing the rubber band that means it has been checked, on the hilt. However on the wiki it says ‘There must be sufficient padding on the tip, guard, pommel and haft’. It may depend on the size of the pommel. Does it protrude rather far? It would probably be a good idea, as @tea suggested to be ready to buy another sword from the stalls at the event but maybe take your sword along and have it checked, just in case. It would be good if it doesn’t turn out to be a waste of money.
Of course if you can’t use it, then maybe get it hallowed and hung up in your groups area as a decoration or something like that, that way, at least it has had some use.