The downside of carrying a duffel or tote bag is that if you're traveling with someone who's using rolling luggage, you will wait for them a great deal. At curbs, at stairs, etc. While you wait, it will feel like your shoulders will fall off. All in all though, it wasn't too bad. Lesson learned, however.
The first day I was in Paris, it was a sunny warm day. So, I went to the Eiffel Tower. I took so many photos of the tower; one of the most well known sights in Paris. Here is my approach to the Tower on that first day: