Make sure you bring fiat and not just Bitcoins. That's been tried once before: http://www.geekwire.com/2011/bitcoin-befuddles-customs-agents-thwarting-seattle-visit-digital-currency-guru/
I would send Bitcoins to people in the other countries to pay them to prepare whatever I need before I get there
so did the fellow in that article, and he was still turned back..