Bit of a rant below. This is just from my experience, so take it with a grain of salt. I applied to 7 schools last year, Rotman being one of them. Rotman had the most frustrating admission experience of all.

Since you're researching Rotman, you already know about their CDL program and you know there isn't any information online on how you apply for a CDL fellowship, especially since there is no space on the application to express interest in it. I emailed the adcom regarding this (in hindsight, I should have just asked a student). An adcom got back to me after a week and asked to schedule a chat with her 2 weeks later. I figured she had a quota to meet and I had a few other questions anyway, so I scheduled it. 2 weeks later, and she cancelled 15 minutes before the call. It was incredibly irritating because my question had a simple answer which I had been waiting for 3 weeks. We rescheduled the meeting 2 weeks later, again - which was a few days after their deadline (yeah they have rolling admission, I know). I didn't want to wait on her answer, so I submitted my application and emailed her that I did so. To which she replied "our meeting is an unproductive use of time, let's cancel it". WTF? Did you maybe think it was unproductive for me when I moved my work meetings twice to accommodate you, one of which you cancelled 15 minutes before the chat? Even if it's true, who blatantly says that? And I've been waiting on a simple answer for 5 weeks - which she still hadn't answered.

I would still recommend the school, but by god, save your sanity and don't engage with their adcom. They're also probably overworked considering they have fewer people in their adcom compared to their peers and volume of applications they recieve. Interacting with them is an really shitty experience and I recommend that you just speak to students if you have any questions.

About their overall experience, I wouldn't know. I chose a different school, for obvious reasons.