About to fly JetBlue for the first time. I usually fly other airlines. I don't have status obviously nor do I have their credit card. What is their boarding process currently? I have a bag that fits in the overhead bin, but I'm concerned about not getting a timely boarding group resulting in the inability to use the very overhead bin above my seat. I'm carrying on dive gear that I don't want to get lost or damaged if I check it. It fits in the overhead bin just fine so I should be able to use it. Any recommendations?