If you just want to spent a day in Paris itself, it will be fine. But be advised that if you book through the website you'll have tickets voor 8-days, so it might be a really expensive option[/QUOTE
Actually, since I am going in 2019, they are running specials in that if you book for 2019 now, they throw in free days/tickets. If you book 3N/4D, you get 1 of those for free. If you book 4N/5D, you get 2 of those for free.
Consequently, I booked those back to back, getting 7N/8D and got 3N/4D of that for Free!!!! It's a great deal when you do the calculations. Over 40% of the trip for free.
I couldn't argue with that.
Also, Flights aren't posted from the states yet for 2019, but if the flights this year are an example of next year, I will be landing in Paris before 8AM, essentially giving me most of that Saturday to hit the ground running.
---Paul in Southern NJ