OK so I booked with JetBlue then saw that their historical performance for this flight is horrendous (flightstats.com). I then booked another flight an hour later with American Airlines. I thought, why not attempt to check in with JetBlue first and use American as a plan B?
Ie if there's a huge JetBlue check-in line, then go with American, etc.
Will this cause any issues at the airport with security? For what it's worth, it's the Cancun airport which is pretty disorganized.
Also—if I check in with American and go through security, but then my some miracle the JetBlue flight is on time, can I just show up at the gate and check in then and there?
Don't want to violate any contract of carriage rules, etc.