For what it's worth I've flown a lot recently (including international) and I haven't had any problems.

Speaking as a former and future airline employee, the worst thing you can do is lose your temper with anyone who works for the airline or they can make things really difficult for you. If anything should come up (delays, luggage issues, etc.) be as friendly and polite as you can. It's their job to help you and they come up against surly passengers so often that they'll probably go out of their way to help someone who isn't screaming. Go into the trip expecting the travel to take far longer than you think it should, and it will probably be smooth.