We called for a last minute reservation and there was availability. This is picture of Twilight Riverboat through a window at Diamond Jo Casino, Dubuque, IA. Guardar. It's the perfect place to go for an affordable and fun day out! When you're ready. The customers are quiet, but they have the music really ramped up - annoying. It was located in Dubuque, Iowa at. . Jan 10, - Diamond Jo Casino in Dubuque, Iowa is a nice land-based casino situated right off the Mississippi River. This riverboat casino opened in and closed in This boat gave five hour dinner cruises on the Mississippi River. We did the supper cruise. Pasa un día recorriendo las galerías en Riverboat Museum (museo) cuando viajes a Dubuque. Boarded at , left at 6, returned about 8. Aquí, podrás dar agradables paseos junto al río y disfrutar de sus. Guardar. Spent an about 45 min the casino where smoking is allowed - this is Iowa. Diamond Jo Casino, Dubuque, Iowa, Estados Unidos Country Inn & Suites by Radisson, Dubuque, IA Pasa un día recorriendo las galerías en Riverboat Museum . One of my favorite casinos. Beautiful night. Located in Dubuque, this entertainment and gambling hub has free admission. Especially love its location right on the river!! The buffet is one of the best that I've ever been at.