If you do go ahead, I think it would be imperative that, as you mention, you get your Alhambra tickets with an afternoon time slot to the Nasrid Palace. For comparison, we did such a day trip, but from Nerja (much closer to Granada than is Marbella).
A high reticulocyte count with low RBCs, low hemoglobin, and low hematocrit (anemia) may indicate conditions such as: Bleeding: If an individual bleeds (hemorrhage), then the number of reticulocytes will rise a few days later in an attempt to compensate for the red cell loss.
Granulomatous diseases, such as tuberculosis, are lung diseases that can cause your vitamin D levels to rise. This causes more calcium absorption, which increases the calcium level in your blood. Some cancers, especially lung cancer, breast cancer, and blood cancers, can raise your risk for hypercalcemia. Some medications, particularly diuretics, can produce hypercalcemia.