Even if you cannot lock your luggage all the time, there are all sorts of lockable pelican cases, small sealed boxes, and the like. Leaving large amounts of cash laying around unsecured in your shorts, wallet or purse seems to be asking for problems. Keeping the majority of your on-hand money in travelors checks, and putting cash and checks in a lockable pelican laptop case or small box might be a wiser way to handle your money while on vacation. Also, American Express now offers a new "Travelfunds" card you use instead of travelers checks - you put any amount of money you'd like on the card, prepaid in advance. The card is accepted wherever travelers checks are. Here: http://www10.americanexpress.com/sif/cda/page/0,1641,18730,00.asp?aexp_nav=travcheques