make an effort to make friends rather than just trying to suggest to patrons in cafe to practice english with you. imagine a beggar walking into salvador and beg for donations from you, will the management allow it? even if you try to approach someone just outside the cafe, it can be inappropriate; you can deemed to be mean too.
incidentally, i have a friend who owns and manages an israel tour agency, if anyone is organizing a group to go from china whether through/with a local tour agency or privately and needs assistance, guides, etc., please message me separately for more discussions etc.,
Just like to hear from vendors, organizers and public what were the responses like for the past few years? what kind of crowd/visitor goes to the fair? what kind of products or services are they looking for? what range or revenue are realized by the average vendors? Is it a good networking occasion? Is the event something the locals or foreigners will come every year because of the mood and festivity etc.? I know it is a lot of questions but just want to get the feel of the event