Called the advice nurse and she said that if I don't have a fever or are coughing that they can continue with the excitement.
Later, during lunch I got a second call. This one was to verify my appointment, apparently the advice nurse didn't put anything in my file about my cold. I'm supposed to update them tomorrow evening or Wednesday morning on how I'm doing before I start the prep. If I'm stuffed up, they recommend my rescheduling (they've had some doing the prep, then coming in and being turned away because of being congested and don't want me having to do this). So, sounds like I'm not the first with this challenge. We'll see what happens...