McCormick Place prepares for return of conventions this summer and beyond By FOX 32 Digital Staff Published Conventions are coming back to McCormick place starting next month. CHICAGO - Conventions are coming back to McCormick Place. Starting in June, the center's Marriott Marquis hotel will reopen to private events and to the public in July. More than 100 events are scheduled to take place there from July through the end of next year. The NBA Draft Combine is scheduled for the week of June 21.