Yes, the Restaurant staff are not allowed to move onto the Prom and tout for business. I remember a couple of years ago Rushie was banned for 2 months because he got too ambitious in his quest for customers.
Also, re disabled people, it is unfortunate that some restaurants on the prom have toilets that are no easily accessable for a wheelchair.
It might be a good idea for a thread here to highlight disabled friendly restaurants. I do know Georges has a ramp to it's toilets and I think the Indian and The Shanghai Blue have accessible loos too. ??