Well, you might end up staying 11 nights if you take the SJU route. The reason IC and other regional carriers have a bit of a bad rep is, at least partly, bc they tend to cancel flights. I've done it a number of times and have had good luck. Others have not been as lucky. Its nice to fly in and out of EIS and skip STT airport and the ferry services. The new AA route EIS-MIA is a potential game changer. Fingers crossed it plays out with minimal hiccups.