Contact Us. If you have any questions, please contact us: By email: firstname.lastname@example.org By phone number: Thank you for contacting us. reviews of Showboat "We stayed on 5//1/ It was a quick I then tried to call the direct line using the listed phone number, same thing. I was fed up. Showboat Atlantic City Casino: Address, Phone Number, Showboat Atlantic City Spent three days and two nights at the Showboat Casino in Atlantic City. An icon on Atlantic City's storied Boardwalk for 21 years, the Showboat Hotel is back.