This is even true of AMA, the CD can take money for membership at time of event, probably true of all organzations. You just won't have a card till it is processed. Many don't know this even some CD's, so you shouldn't feel bad Bret.
Steve Maxwell
ORIGINAL: NJRCFLYER2
You should be able to join IMAA at an event. I've only been to one event, they were glad to take the membership fee at the time.