if i book now, when is the latest i can cancel if i decide i dont want it?
EDIT: just found the answer...dont like the T&C
If fight reservation is changed/cancelled, a $100 fee per person will apply (plus any increase in fare for changes), and the promo code will only apply to any modified or new reservation if it is booked by 11:59 PM ET on 11/20/12, is for travel within the eligible travel period, and otherwise satisfies all terms and conditions for this offer. Changes/cancellations after 11/20/12 will result in the promo code discount being forfeited. Cancellations are for JetBlue travel credit only, valid for one year. If reservation is not changed/canceled prior to scheduled departure, all money associated with reservation is forfeited.