I wash my car weekly using hyper wash, wax it monthly with NXT 2.0, and do compound or polish once every 6 months.
I drive my car to my office around 7 in the morning, let it on the middle of car park, and drive it back yo home around 5 in the afternoon.
I have 2 option to park my car, directly under the sunlight, or park my car under a tree. under the direct sunlight make me worries about UV protection layer of my car, but sap of the tree also had to be consider since I found it difficult to clean, even when I am using UC.
I believe there will be no a true-false answer, so please keep this discussion objective.