Museum pass

I'm afraid it's a matter of doing fhe math. How many of the Museums on the pass can you reasonably be expected to see during the validity period ov the pass you buy. Vs the individual single admission price of each of those museums. The more museums you cram in, the better the total cost on the pass. Assuming you only want a brief stay in each place. But if you want several hours at the Louvre and/or Orsay, for example, then the pass may provide less value. Note that you still need to make a reserved entry time, even with the pass, for those museums requiring it.

Exactly - it's not just a question of the monetary cost of the pass vs the individual tickets. It's also that you now have to reserve in advance the times to visit some of the most popular museums, thereby eliminating another past advantage of the past - flexibility.

I ended up deciding against it after doing the math. The fact that you still need reservations for some places makes it difficult to get the best value because you will have to stick to a schedule of the entry times you can get as opposed to lining up your visits in an order that is most efficient. You will likely find yourself zigzagging back and forth across the city to make your timed entry. Then you will find yourself leaving a place before you are done in order to get to your next timed entry. I think if you want to visit several places that don’t require advanced booking then it might work, but you still have to be willing to visit several sights a day for the length of the pass in order to make it work.

In addition to the Paris Museum Pass there is another pass that may be useful for your trip to France.

Passion Monuments Membership

In Paris it includes unlimited admissions to Sainte-Chapelle, the Pantheon, Arc de Triomphe, the Towers of Notre Dame, Hotel de la Marine and Conciergerie. The pass is valid for 1 year from date of purchase and includes other perks like discounted tickets to select concerts at Sainte-Chapelle.