One of the interesting things in this introduction is the mention of people flocking to soda fountains. If it were written today I suppose it would talk about coffee shops, and the resurgence in popularity of tea.
The other thing that strikes me is how worried the author is about critics. Personally I don't believe in inviting critical people for dinner and drinks. But that's just me. If you like the kind of sniping criticism that these people bring to the table, be my guest. Just consider your ice cubes, as advised below:
Beverages probably furnish more pleasure at meals or between meals than any other single course. The early morning aroma of fine coffee makes a day start right. Beautifully colored and delightfully flavored cold drinks bring joy and happiness to meals served in hot weather. It is the punch bowl that forms one of the chief attractions at parties. The large numbers of men and women--old and young--who swarm into the soda bars in every part of the world provide ample testimony to the craving of everyone for fine drinks. The clever homemaker can serve in her home as delicious and refreshing drinks as can be found at the best-equipped fountains.
A good general rule to follow in serving beverages is, "Serve hot drinks hot and cold drinks cold." Never serve lukewarm hot drinks nor slightly cool cold drinks.Make all beverages as lovely and colorful as possible. Select garnishes and ingredients in beverages for color as well as taste. Your critical guests will remember the beauty of your punch bowl long after the flavor of the punch is forgotten. Particularly study the possibilities of gaily-colored and garnished ice cubes as an accompaniment of cold drinks.