I did the math on this recently: GL has approx 3 million Gt of ice and is losing it at a rate approx equal to 260 Gt/yr.

If that rate is constant (unlikely) the first ice free summer in GL will be in 13,500 CE

Elite cocktail bars in the UAE have a new way to draw in customers: luxury ice from arctic glaciers

• A company in Greenland called Arctic Ice is harvesting ice from the country’s shrinking glaciers.

• The company sells the “purest ice in the world” to elite cocktail bars in Dubai to chill drinks.

• Greenland’s ice sheet has been melting at an alarming pace in recent years.
  (…)