Day Three, Part Three (Last One): Lime Soup in Progreso

Before climbing ruins at the Uxmal site. 

After visiting the Uxmal Mayan ruins, Shannon and I made our way into the sunny, pleasant courtyard that housed the site's shops and restaurant. After some light shopping, I dragged Shan to the food. 
Neither of us were hungry, but I couldn't resist the urge to try authentic Mexican food. I ordered a pineapple juice and a traditional lime soup to split with Shannon. It was a regional delicacy, our tour guide, Saul, explained. My order came to about $11 USD. Complimentary homemade tortilla chips and salsa were on the table. 

Homemade tortilla chips. They were thicker than the Cantina-style chips I was used to, but very delicious and obviously fresh. 

The salsa wasn't very hot (unless you got a pepper seed). It was not so much a sauce as chopped vegetables, probably closer to what I recognize as pico de gallo. 

A small bowl of the lime soup. It was light, refreshing and delicious. 

There was a slight panic over tipping. Neither of us had researched that prior to coming, and so we left a tip of 20%. It wasn't included in the bill (I didn't see any charge labeled IVA or propina, so I assumed tipping was on us). 

A post-trip check of TripAdvisor revealed that we had behaved correctly, although it would have been better to leave the tip in pesos. 

According to TripAdvisor's guidelines, 

"If you receive good service from your waiter or waitress, it is customary to leave a tip of 15% of the cost of the food/beverages before the value added tax (listed as ‘IVA’ orImpuesto al Valor Agregado on your bill) is added. IVA is 16% of the cost (11% in border states), so if you want to leave a 16% tip, simply use the amount of IVA to leave as your tip. This doesn't work always as often the IVA is not shown, but simply included in the bill.You may choose to leave more for exceptional service, and less for poor service."

Another fact revealed in hindsight: while the shops and restaurant accept USD, they might not always have change. Bringing ones or pesos is smart in any case.