WebInfra Correct, you would need to have a server for this. Unlike our demo, we are able to help you set it up so that the demo will log in to an end user view so you could get away with having all services on the single server.
There are currently no plans to support demo mode on a Reseller account and there may be some security issues with this. I will definitely log a feature request so the team can explore the possibility further.
