Marriott Workspace On Demand. Duke LongJanuary 13, 2013Add comment Marriott Workspace On Demand I received a quick email from my friend Mark Gilbreath of Liquidspace. I have featured Mark and his company previously and he was just updating me on his companies latest . Liquidspace has teamed up with Marriott to create Marriott Workspace on Demand. Duke Long The Simple Art Of Hiding In Plain Sight. You Are Old Outdated Ignorant Embarrassing And Need To Retire.