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  Self: "I plan to travel to japan this year.  Do I need to notify my credit card companies? (Amex and Cap One)"
  boxsterguy (boxsterguy): "Can't hurt.  What's your plan if you don't and they freeze your cards for suspicious activity while you're overseas?\n\nSome credit card companies are more zealous than others about flagging/freezing accounts.  I've never had to inform Citi or Discover about travel plans, but plenty of other people have had issues with their banks when they didn't.  Better safe than sorry."
  