Obviously, don't use the current list as being a complete list. There are always conventions going on...
The list had nothing noted for our recent dates (9/29-10/6), and we encountered a large convention for the majority of our trip (Sunday - Thursday). So don't base your dates on this list or you might get a surprise.
I've been to CSR 3 times - different times of the year, and we've always encountered conventions. Most of the time they are a non-issue and actually make the resort feel less crowded.