Unfortunately, I haven't ever been to the campus, but I was thinking about applying there. It seems like Thunderbird, U. of South Carolina, and Wharton are always the top 3 for International Business. Thunderbird is built on an old military base that was sold to a former General after World War II (if memory serves).
Ultimately, I decided not to apply there, even though I am interested in International Business. The deciding factor for me was the fact that Thunderbird's MBA isn't that highly ranked as an overall program. Also, I noticed that it offers Post-MBA Certificates and online courses in International Business. I figured that I could always get such a certificate in the future. Who knows, maybe a future employer will even pay for your studies there for "Continuing Education".
I know I sort of rambled on about my own thoughts on Thunderbird, but I hope that you were able to get something out of it that you can use. Good luck!