Ok, is there any workaround for the 5 account limit, or is the answer just that I need to buy additional ISY's and portal subscriptions?
Sjenkins, the reason I use a different account for each room is that there is no way to make routines or device spokens other than "lights" specific to the echo device that hears them. For example, I have shades in multiple rooms, and I want to be able to just say "Alexa, shades up", instead of, "alexa, bedroom shades up". If they were all on one account, there would be no way to do that. But using separate accounts for each room, I can define "shades" as a different ISY action item for each room to achieve the above goal.