For yourself I'd suggest a light vest with inside pockets. Several of them maybe with zippers or velcro. . There are pick pockets everywhere now.
When our kids got older we would give them money and tell them they would get more if and when they got to a certain point, usually near the ice cream place, and would get more money at that point. So much was taken off for each 10 minutes late...they always beat us to that place. Surprising how much money you can go through there.