I received this information from my TA today.

Cruise Line Scheduled Reopening Dates:

AmaWaterways – August 20th, 2020
American Queen Steamboat – August 15th, 2020
Avalon Waterways – July 20th, 2020
Azamara – August 6th, 2020
Carnival Cruise Line – September 25th, 2020
Celebrity Cruises – August 1st, 2020
Costa Cruises – July 24th, 2020
Crystal Cruises – September 1st, 2020
Cunard – November 4th, 2020
Cruise and Maritime Voyages – August 26th, 2020
Disney Cruise Line – October 4th, 2020
Emerald Waterways October 5th, 2020
Fred Olson Cruise Lines – August 27th, 2020
Holland America Line – September 27th, 2020
Hurtigruten Cruises – June 16th, 2020
Jalesh Cruises – September 21st, 2020
Marella Cruises – August 28th, 2020
MSC Cruises – August 1st, 2020
Norwegian Cruise Line – October 1st, 2020
Oceania Cruises – October 4th, 2020
Paul Gauguin Cruises – July 29th – 2020
Ponant – July 4th, 2020
P&O Cruises – October 16th, 2020
Princess Cruises – September 19th, 2020
Regent Seven Seas Cruises – October 4th, 2020
Ritz-Carlton Yacht Collection – April 22nd, 2021
Royal Caribbean – September 18th, 2020
Seabourn – October 14th, 2020
SeaDream Yacht Club – June 20th, 2020
Scenic Luxury Cruises – October 9th, 2020
Silversea Cruises- August 22nd, 2020
Uniworld River Cruises – August 2nd, 2020
Viking Ocean – September 5th, 2020
Viking River – September 5th, 2020
Virgin Voyages – October 16th, 2020
Windstar Cruises – September 3rd, 2020