Looking to buy JetBlue tickets for a vacation (first flying vacation post pandemic!) and prices have been sky high for the past two months we've been tracking them. Looking online it seems that if we buy JetBlue blue fare or higher fare tickets and then prices later drop, we can ask the airline to give us the difference as a credit to be used within a year (as we could otherwise cancel the tickets and rebook with the credit). Is that correct? Has anyone successfully done this?