Never carry all your eggs in one basket ...
If you use a wallet, get used to putting it in your front trouser pocket, never carry anything of value, including money, in your wallet. Don't take any trinkets with you.
A CC is invaluable ... for 5 continuous years I never took any money on holiday, just a CC ... all banks will give you money off your CC and the 'rate of exchange' is far better than anything in our High Street or even the country you are visiting. Well, I always got a good rate, even if it did cost £1.50 a pop.
Never take anything handed to you ... them "flower girls" will rob you blind ... it is very hard not to put your hand out to accept, stick your hands in your pockets & walk on.
Sad to say, but this sort of thing happens even in good old Blighty, you can pick em out here getting off the train in Southport.
oh, have a nice time ...