We will be there on Thursday. So far that looks like the nicest day weather-wise.
There must be a lot of people with the intention of attending as it was very difficult to find an open site at a campground. We ended up about 45 minutes away from the fairgrounds.
That's across Florida this time of year.
Would suggest you arrive early or late because of crowds. I have seen that show back up traffic onto all the surrounding highways and cause a 2 hour wait to get in. ... maybe a call first to find out their peak times.