#1: Dress To Impress
Look the part. Make sure that you are dressed smartly when you travel. There is almost no chance of getting a free upgrade if you are wearing shorts and a scruffy t-shirt, so at the very least, check in wearing a shirt and pants. there is no need to go overboard and wear a suit – unless you really want to. The key is to look smart, but not like you’re trying too hard.