When I arrive into Paris airport where is the best and easiest (hopefully no lines) to get the Paris Museum Pass?
See this page on the official Paris Museum Pass site.
In your other post, the first museum you're going to is the Louvre; that's where we always get ours. Use the lower entrance; we never wait in line, so if you're planning on being there 20m early you should have no problem.
A year ago in April we bought the museum pass at CDG at the tourist info desk--English-speaking agent!-- along with a metro pass and RER tix. Thought it was one of our smartest moves of the whole trip! Marian
We bought the 4 day pass several years ago and I think we started at the Picasso Museum. For us it was a bit overwhelming to visit so many museums in that time period-museum overdose. The last one we went to was the Pompidou and being not much of a fan of modern art I doubt I will ever see that one again. We had only one week in Paris and WAY too much time was spent in museums. There were huge crowds at the major museums (as usual-it was in May).
Marian's idea is best. I bought the pass and RER ticket together. Very easy. I'm not sure which metro pass Marian got. Usually your best choice is either buying carnets (packs of 10 tickets) or the Navigo weekly pass. The Navigo is good from Monday morning through Sunday night, so whether it's good for you depends on the days you'll be in Paris. If you can use it for 4 full days you may break even. There's a one-time charge (still €5??) for the pass on top of the weekly rate. And it's more convenient that the individual tickets and allows you to hop on a bus for a stop or two, and save your feet for the museums.
Sorry, to clarify, at CDG we bought several carnet (sets of 10) metro tickets as we were in Paris the first and last weeks of our trip and that approach seemed to allow the most flexibility.
Yes, but the pass isn't only for museums. It's the Arc de Triomphe, the towers of Notre Dame, St. Chapelle, etc. I see at as a convenience - avoid (some) lines, not feel that since you've paid a hefty entrance fee you have to trudge through the whole site, not hesitate to go into a site because of a hefty entrance fee. I figure if I more-or-less break even, it was worth it.