Allegiant also flies from Pease AFB in Portsmouth, NH to Sanford. They were running a similar special when it first started. I've nothing but positive things but here is my fear. From Portsmouth they only had one flight per day at 8pm arriving at 11pm in Sanford. From what I've read everything at Sanford, including the car rental places, close at midnight period. If there are thunderstorms or whatever else may cause a delay and you arrive at 12:30 and all of the car rentals places are closed they you'd be stranded. I think if I were to take that flight I would arrange to get a room right near Sanford, assuming there are hotels with shuttles nearby, and get a fresh start the next day.