I'ts the biggest mixed cat regatta in OZ, has been going a long time, run by Great Lakes Sailing Club, do some Googling and you should find past info (may not have this years yet, but is much the same most years), is a long weekend for NSW and QLD.
I have been there a few times in the past with some other Mossies, sailing is ok, main attraction is the number of cats and variety, just amazing. Probably get 3 or so Vic Mossies the rest is up to you.