Hialeah Park Race Track opens for 1933 racing season

The transcript describes the excitement and atmosphere of Derby day at the Miami Jockey Club. Bettors are filled with high hopes of winning to afford luxuries, while the vibrant scene under tropical skies adds to the thrill as people rush to place their bets.

What do the dress clouds symbolize in the context of the event?

What activity do the attendees engage in at the Perry mutual windows?