Yesit can be done. We bought oodles, set aside an unhealthy pile to consume in the short term, boxed up the rest carefully and took it to the post office right there on Market Square. Shipped 'em home to the USofA. When we got back from our trip they were waiting for us at the post office along with all the bills and junk mail. We tore into them and tried to be disciplined. They lasted several weeks. But it does require a lot of self-control.
Most of the smaller chocolatiers don't do any business in the US because they don't want to pay for the necessary FDA inspections. So your only option is either to pick some up personally, or have someone else ship you some. Probably the best Belgian chocolate available in the US (but not the best in Belgium, in my opinion) is Leonidas.
You have to check with the staff at the shop itself. Not all Belgian chocolates are made with cream. Those that are should be eaten within a week or so. Those that aren't have a much longer shelf life.
If you have trouble procuring Dumon chocolate, I'll recommend an alternative. Try Chocolaterie Stam from Amsterdam (shops across Holland and Des Moines, Iowa). I've enjoyed fine chocolate in many places in Europe, and this place is among the best IMHO.
Being from belgium and living in Phoenix , i know what it is to miss the dumon chocs. however, i get the shipped to phoenix without an issue... just regular mail service, in about 5 days they arrive.... never had any issues... going back to belgium about 5 times a year and bring loads back but when i run out, i just get them shipped...
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