Home court advantage & tricks of the trade.
Chica and waiters have the home court advantage in language and culture Life in TJ is on their turf.
Yes. might mean may be, or just no to a request.
Yes, it can be confusing at times including a total rip off sometimes in Zona Norta. It is no where to the scale of State-side Wall Street.
Many member in this forum has addressed the tricks of the trade in detail to avoid future rip off.. A future search of the thread may be helpful for a quick review.
Be alert and be aware as a tourist.
Watch your money.