The Czech Republic uses the same plug as the rest of Europe (except the UK), you can pick up an adapter at your local wal-mart, drug store, or order it off of amazon. You can also pay ten prices at the airport.
Most of the rest of the stuff on this thread is best ignored. Register with the U.S. consulate? Are you kidding me? They’re going to laugh if you walk in there for some other reason than losing your passport. It’s Europe, you’re not hitchhiking through Eritrea and Sudan. Don’t pack a lot of cash with you, there are plenty of ATM’s and credit cards are taken everywhere. Packing light is always a good habit, but be aware that it can get cold even in the summer in central/eastern europe. They’ve got great beer, the people generally like Americans, and the women are beautiful. What’s not to like?
Thanks for the advice.
I’ll do a little sightseeing (their tram/subway system looks convenient and great) but my main purpose is for a curling tournament.
Found a nice little hotel nearby a subway stop and the curling club. Got a great deal with airfare and hotel for only $750 (great bargains in the winter when it’s out of the tourist season).