The much-anticipated arrival of Marshalls in Dubuque is coming this week. A part of Kennedy Mall in Dubuque, the retailer will operate with special hours (8am - 10pm) to accommodate as many as possible on its opening day. When you look at the current state of malls in America, Kennedy Mall is thriving with a great deal of variety. Marshalls' Kennedy Mall location will mark the store's debut in Dubuque. Following its special hours for opening day, Marshalls will be open from 9:30am to 9:30pm.