Now that I think of it maybe three days may not be enough.
As you wrote, there is so much to see and do.
The Basilica of Our Lady of Chiquinquirá must be very old, I would guess to be at least 200 years old and beautifully kept in good repair.
Paseo del Lago appears to be a delightful place.
I must improve my ability to speak Spanish. Shopping on Day Three? Now that is a language we all speak @isabelpena

!LADY