Any seasoned punter would always assume there is some form of security in the premises being paid part of the booking fee.
As long as you are polite, friendly etc. Then nothing to fear.
For my security, a cheap punting phone and only the exact amount of cash would 1. Limit your loses in the event if you being robbed. 2. Hide your identity.
Park out of view of the premises, don't take wallet with ID and bank cards etc.
It's all very much common sense really.
I've never had an incident before (touch wood) but have had stories here from people that have.
The girls have had incidents too, which is why they will have their security.
At the end of the day, we should limit our risks as they should do theirs.