Wine experience

Ideal service temperature ranges from 45-50F (light bodied white and red wines, including sparkling wines) to 60-65F (full bodied red wines).

A practical advice: 

• Fridge temperature (40F) is too cold, allow wines to warm.  
• Room temperature (around 70F) is too warm, allow wine to cool.

Flat, at constant (ideally 55F) temperature with sufficient humidity (50-70%), possibly in a dark space.

Champagne! It is cheerful, enjoyed by everyone I know, and very versatile (it pairs easily with all courses).  And there are many, less expensive, sparkling wines produced in the same way and well worth a try, including Crémant de Bourgogne, California sparklings, and Franciacorta.