Unattended Remote is created specifically for unattended remote session over the internet.
What I'm gonna do is for you to contact your Sales Engineer and ask for a demo with you. But you might want to ask for the requirements so that you can prepare it before hand and they can assist you during the install. Then you can do the testing with the Sales Engineer. If it's good enough, then that's when you purchase the product. That way, you can be sure that you have answered all your questions about the DRS.