Read elsewhere the original plan was to rebook pax via DUB on the MCO & MIA flights but Nicole put paid to that.
They tend to operate without a spare A330 in DUB either. Every year or two something like this happens and us enthusiasts bemoan the lack of spare airframes but I can only assume they have run the numbers and it makes more financial sense to operate as they do by a significant margin. They’re a very lean operator. Another example is the IT system (ASTRAL) which they designed themselves in the 70s. Very difficult to get it to integrate with other systems but it saves them a fortune vs paying Amadeus and the number of failures in 6 decades can be counted on one hand. It also is one reason they aren’t fully integrated into one world and why things like amending a previous paid seat selection can’t be done on the app.