Here are some important updates if you are planning to visit Le Mont St. Michel and the Eiffel Tower this year and next:

Le Mont St Michel:
There are big changes here that you need to build quite a bit of extra time into your day. The parking area is a good 45-minute walk to the entrance, and the same for the way back. That makes it an hour and a half, in addition to the site visit. Also, there is a great deal of walking involved; if anyone has difficulty, then it will be a challenge... even if you are walking from the parking lot to the shuttle and then between the shuttle drop-off point and Le Mont St Michel. It’s about 300 yards each way.

The Eiffel Tower:
My latest information is that there is still only one working elevator. But, the good news is that tickets can once again be pre-booked... although there are fewer than normal because of the elevator situation. As of right now, tickets can be pre-booked until September 1 (June is sold out and much of July, as well). Please be sure to check the website regularly since things seem to be changing all the time. http://www.eiffel-tower.com
Attention: When you buy tickets for the very top of the Eiffel Tower, you will not be able to bypass the queue on the second floor for the elevator that takes you to the top.