Meet the team outside the Eiffel Tower, without passing any security checks. They will be near the trees and benches outside the South Security Entrance (Entrance #1) on Allée des Refuzniks. The representatives will have orange hats and signs reading "ExperienceFirst" or "ExperienceFoundry".
You can cancel up to 24 hours in advance of the experience for a full refund.
Climbing the tower steps is quite easy and rewarding as you see the view gradually change as you climb.
It's a good amount of steps to walk up to the 2nd floor, but there are breaks in between so it's not a straight walk up the 672 steps.