Bad business practices. They screwed up the reservation, were AWARE that the reservation was set for the wrong day, and not only refused to make accommodations, date changes, or refunds, but even refused to admit that they were at fault. And, after reading reviews from people who have stayed there, I feel like I dodged a bullet.
As of June 1 2015, JetBlue has began charging for all checked bags, including the first checked bag, on its lowest priced fares. All checked bags must not exceed 62 (157.48 cm) in overall dimensions (length + width + height) and cannot exceed 50 pounds (22.73 kg).
Checked Baggage Summary. Flights within and between the US, Canada, US Virgin Islands and Puerto Rico will always charge for every bag, including your first checked bag. The rate is $25 for the first bag, $35 for a second bag, $150 for a 3rd bag, and $200 for every additional bag.