New York City society gathers at National Horse Show opening night

The transcript describes the opening of Manhattan's Winter Society season, highlighting the presence of first nighters and the simultaneous occurrence of the horse show and the closing of the National Automobile Show. It also mentions Mr. VR Hutton observing the judging of three-gaited saddle horses, which are beautifully groomed champions.

What is the significance of the 'first nighters' mentioned?

What event coincides with the opening of the horse show?

What does the text imply about the timing of the National Automobile Show?

Who is Mr. VR Hutton and what does he observe?

Describe the condition of the saddle horses mentioned in the text.