The Paris Pass took away any concern re what to do. It was great to know the we could jump on and off the Metro as many times as we like. Only critisism is that you simply cannot fit everything, or even as many things as you would like, into one day. If I was going to Paris again, I would double check which places are free anyway, and plan doing all of those in one day.
Real value for money when touring Paris.
We had great time, Museums, bus service and boat cruise , it was all there and we saved so much money too.