MGM Resorts cancels reservations through May 21 Michelle Williams, MassLive · April 26, 2020 at 12:51 pm MGM Resorts International will not welcome hotel guests for at least the next four weeks. The gaming company canceled hotel reservations between May 1 and May 21. MGM contacted guests with booked reservations for May by email and said a full refund would be issued for any payments received. MGM will allow hotel reservations with an arrival date beginning June 1 for Las Vegas properties and MGM Springfield. As efforts ramped up to quell the spread of COVID-19 in Massachusetts, MGM Springfield was ordered to close on March 14. Within three days, all the gaming company’s U.S. properties were closed to the public.