With the yardstick system used here (Australia) the actual conditions do, but rarely have the major influence on the "corrected" placing’s. If you look at the results of any "major" regatta (one where there are sailors of comparable ability sailing in a variety of different classes and size of cats) It is virtually always the "top" sailors who fill the first 10 places, regardless of the conditions, and it is the “lesser” qualified sailors down the placing’s who claim that it was the “conditions” that disfavoured them.
Funny that?
Distance racing, the conds can make a massive difference.
Looking at the overall picture for this weekend, wind is looking like it will be east most of the time. However, this may or may not promote the sea breeze later.
The course varies between 55 and 82 (true) so it will be a beat / fetch out. However, the sea breaze will probably add more south to the wind, so depending when it arrives, the early boats may or may not carry their kites back again. If they do not this could make a massive difference, or the wind may just be spot on for a twine wire kite reach for the fast boats to lay the waypoints and then the slower boats need to gybe down wind.