They don’t generally seem that interested unless you’re on roulette to be honest
Scariest encounter I ever had looking back was in that Crystal Rooms arcade in London on Leicester Square, a couple of guys started striking up random conversation about what I was playing and so on, a short white later felt a discreet hand try entering my coat pocket so they were obviously trying to nick my cash, told the staff who were TOTALLY disinterested!
In the end I just kept bouncing around machines until they gave up, they wouldn’t have got anywhere as all my cash was in the inside pockets anyway but these days they would have probably just knifed me haha!