I've just seen this:
..which suggests I cannot just create a case and allocate time to it without an estimate.
Now, I'm happy to create a project/area for administrative tasks and allocate time against them - and stick a made-up estimate. I'm not interested in using EBS on that project but is this going to skew EBS when it comes to other projects where I am estimating properly and allocating actual programming time to cases?
Is another alternative just estimating 50 days against a task and then closing it when I reach 50 days and opening a new one or is EBS not going to be as affected as much as I think it might be?