Temporary membership lasts 3 months and covers you for practice in your local dojo. It does not allow you to participate in seminars, taikai or gradings. We expect everyone who is able to participate in the Kyusha Taikai to do so BUT the Kyusha Taikai rules state
All participants must be fully paid up members of the Association for a minimum of 3 months prior to the date of the Taikai and will be required to show their BKA membership at registration.Which means you may have already missed the boat if you haven't joined up. You will definitely have had to have joined by the end of the month regardless as we expect everyone to be members of the BKA if they wish to continue practicing at the dojo.
Mike has a list of all registered BKA Members, and it isn't pretty. I would recommend everybody make a concerted effort between now and tomorrow to get their membership in order! Fundamentally, your membership is your insurance to train. In a full contact martial art the importance of insurance coverage cannot be understimated. We will NOT risk training with you if you are not fully covered.
You can find all the information regarding membership and online registration on the BKA's website here.