Well i can't see issues about ordering in mate. regardless of distance. as far as I know they go anywhere.
EDIT: I just did a google search, they have stores for the US and the UK, so just select the US one and then i think you will be fine, it seems it covers the whole of the USA (obviously!)
http://store.apple.com/1-800-MY-APPL...cts/AppleStore
there is also a little thing at the bottom to track your orders, so you can keep your eye on tihngs easily.