Southwest's service is pretty thin in some places. Highly likely you won't get a flight the same day if you cancel to avoid the 737-HCF. Then, you have to exp

Southwest's service is pretty thin in some places. Highly likely you won't get a flight the same day if you cancel to avoid the 737-HCF. Then, you have to explain to Great Aunt Greta why you won't be at Thanksgiving. Better just to avoid Southwest.