Based on the context provided, the most likely scenario is:
Those who visit the Eiffel Tower in August will find it lit more brightly than those who visit in February.
This is a reasonable assumption since the Eiffel Tower is often adorned with more lights during the summer months for tourism, while different lighting arrangements may be in place during winter. The other options are less plausible as they involve significant changes to the structure or management of the Eiffel Tower.