Do the current restrictions keep me from buying new material while I am over seas?
So long as you are purchasing with a credit card that is issued by a U.S. bank and have a U.S. billing address, you can purchase content while traveling. You can make purchases to read on you Kindle from anywhere you have either 1) Whispernet service (http://www.showmycoverage.com/mycoverage.jsp?id=A921ZON), or, 2) Access to www.amazon.com/kindlestore (and a USB cable to download from your computer if you are out of wireless range).