We arrived at CDG via American Airlines and went thru customs in no time flat. They checked passports and that was it. I don't know if it was us or that's the way they normally do it.

We had never been to CDG let along Paris and I was wondering how it would all work out. We took the RER and it was a piece of cake. Our RER stop let us off 5 min from our hotel. Couldn't have been easier.