Hi,
Welcome to PC. I don't think there is a man alive that hasn't had the same thoughts as you at least once. It all comes down to how you act on it. I am a believer that flirting is harmless as long as it doesn't get physical. I would tell you to transmute that lust onto your wife.

How would you feel if she cheated on you while you were away?
Trust is a big factor and you will violate that trust if she ever found out. You could justify it by saying you are overseas and no one will ever know, but you will know and you never know how it may come back to haunt you. I speak out of experience. Are you ready for the consequences a temporary sexual moment may cause?

Just because you can have a one time sexual fling doesn't mean you should. Just knowing that you could have another woman and you don't should make you feel much stronger morally.

In short, I wouldn't do it. Do you know how many men that woman has had sex with? What if you bring home a unwelcome present to your wife in the form of an STD. How do you explain that? Don't do it, your marriage isn't worth a one night fling.

Have a great time and think about your wonderful wife.