How to tackle this issue?

Here’s a question from Harry Singh at Aesthetics in Hatfield:

Hi Chris, We have a pub across from T-Mobile. A lot of the corporates go their for lunch. We are trying to promote ourselves to these lunch time customers, however since it is a chain of pubs, they do not allow any companies to advertise, etc. Apart from going their every lunchtime ourselves to eat, can you think of anyway round this. Thanks Harry

and my initial answer:

does the pub hire rooms – hire for lunch and learns on cosmetic dentistry and facial aesthetics

any other ideas out there?