Guitar Workshop Enterprises LLC. After more than a year of intense negotiations, a plan was approved in late to finally exit bankruptcy.no gambling at bushwood CASINO COSTA IN RICA SALE With this design philosophy in both Cleveland and Cincinnati, the developers plan to advance the urban casino concept in the United States. Despite its polish, however, the video was not something that Gilbert 's company, Rock Ventures LLC, wanted to share with the public now, because it said the. Through closely held Rock Ventures, Gilbert has bought more than 70 properties in downtown Detroit. Gilbert 's gaming arm, Rock Gaming, owns all of Detroit's Greektown Casino and Rock Ohio Caesars. Detroit-based Rock Ventures serves and connects Quicken Loans Founder and Cleveland Cavaliers Majority Owner Dan Gilbert ’s portfolio of more than companies. The Rock Ventures Family of Companies' mission is to increase growth.