Paris is a very popular destination, and many attractions sell out weeks in advance. Therefore, we strongly recommend securing your tickets as soon as you finalize your travel dates. By booking in advance, you have the comfort of knowing that you've secured your tickets. Plus, you'll avoid standing in long lines at ticket offices (who wants to waste their vacation doing that?!)
Consider creative solutions if you find that tickets you desire are sold out. For example, if general admission tickets for the the Eiffel Tower are no longer available, you could book a combo package that includes admission to the Eiffel Tower, or a delicious lunch or dinner Restaurant 58, located in the Tower´s lobby.