Must. Evening lighting is really beautiful. But if...

Must. Evening lighting is really beautiful. But if sunset is late in Paris ie 10 pm etc you have to wait long to see light. Also if you want to take pic with Eiffel Tower then you have to go to garden nearby. As this place is barricaded by fiber walls. You can't get tickets online so easily as tour companies book them. If you have to buy tickets on site then you should have 3 hrs spare.