We fly Halifax to Orlando in non-peak seasons, so we never have direct options. Porter started offering flights from here, so we took them for our Sept. 2025 trip. Similar comments to most on here - slightly late on 1 or 2 departures, on time the others. We paid for the Navigate fare (similar priced to other airlines' mid-priced fares) and we enjoyed the benfits (slightly more leg room, boarding before the bulk of the plane, flights > 2.5 hrs included a meal - only between toronto and orlando - my picky DH didn't eat, but I liked the meals I had on the way there, and on our way home). I noticed they board the main part of the plane back to front, which seems more efficient.
The one thing I'll mention about leaving MCO from terminal C is that the Porter check-in desks were SO far back in the departures area we couldn't find them easily. They were there, but they were the very last/far end desks. We just didn't see them easily.
Oh, and we liked them enough we're booked on them to fly down again in May for DH's 50th birthday trip.