Yes, cactus works well in a coffee shop. I find many places decorated with cacti but not specifically place with literal cacti around it that works as the cacti shop and the rattan shop. In Bali, there are some but that's the first place I found in Java.
When it comes to the taco, it was wrong because they only added cheap sauce with bunch of cucumber with factory made beef slices. It's really unlike the taco that I normally taste and eat. Perhaps they go by the definition that it's a meal with tortilla wrap with fillings.
That's actually a nice idea since that would also generate extra income for the cafe. It is now giving me more ideas that a cafe could sell flowers, art works or such.