I'm going to be in Paris on November 23 and I'd like to go to the top of the Eiffel Tower. I plan to buy my ticket in advance to avoid waiting in the ticket line while there. How long should I expect to wait in line for the elevators? Do I take two different elevators to get to the top?
Also, I've read a bit about skip-the-line tickets. Are there such a thing? If so, how much time do they save and where can I buy them?