That's the best time to be at CSR. All those convention guests will be doing their meetings all day leaving the buses and pool free for the other guests. Beats fighting a crowded queue at POR/POFQ anyday.
Y&B Club, BW, Cont, GF, Swan and Dolphin are all convention resorts so if there will be 100,000 people, they will be staying at all the resorts in the area.