Thank you for this. It seems we have similar eating habits while on vacation . We love to eat street food, picnic, etc. We have booked a studio apartment in the Marais so that we can cook some meals. Do you speak French? Also, I have read that wine is inexpensive and food is more expensive compared to the US in cafes. What was your experience? I am going to research the two tours you recommended. . We are looking into buying the museum passes for Paris. Did the official Louvre tour you took include admission? Again, thanks for the specific advice. It is really helpful
Oh, man, I enjoy thinking about the trip. It was just amazing! (I made it my personal mission to compare and test as many baguettes and macarons as I could. For the record, best macaron was at Gerard Mulot - the honey nougat. Ammmmazing) I don't speak French...we tried to learn some phrases (hello, goodbye, please, thank you, how to order coffee, say that we didn't speak French, ask for tap water, and my personal favorite, how to ask for an undercooked baguette, haha) but for the most part, after our initial attempts to speak in French, most people were able to communicate with us in English. It really wasn't bad to get around or anything like that. In fact, it was a fun adventure!
As for costs - like I said, we learned to ask for tap water to avoid paying for bottled water. That saved a lot. Wine was incredibly cheap (like, two or three bucks a glass! There were some downsides to being there while pregnant...) - WAY cheaper than soda. As for food costs, I actually was really impressed with the cost of most of the food. Again, we were fans of street food and getting snacks at lots of places versus lots of sit-down meals. In general, most places have a really reasonably priced plat de jour, which is usually an entree with a dessert and drink or appetizer and drink. We tended to get that, if we weren't grabbing a sandwich somewhere. I would avoid eating on Ile Saint-Louis...that was our biggest disappointment. The food was ok, but really overpriced. We'd gone there to visit Berthillon, a really well-known ice cream place. (We were actually pretty disappointed in that, too - honestly, I prefer l'Artisans de Glace at Epcot, but they might not let me back into Paris if I say that too loudly...) Anyway, try out the plates of the day, stick with wine, and I think you'll be happy with your food costs! (Also, for breakfasts, we tended to go to the coffee shop in the bottom floor of our apartment building and then stop at a boulangerie as we were walking around)
The Louvre tour did not include admission - we had the museum pass and then went downstairs and signed up for the tour. Again, WELL worth it. My background is not in art, history, or anything related, so I absolutely would not have appreciated what I was seeing. Granted, we didn't see as many things as you would just walking through on your own, but it was amazing to learn more about the building itself as well as the art. So worth it.
And I literally cannot recommend the food tour highly enough!
Other general information, with the corollary that we are big walkers: I thought the wait to go up to the top of Notre Dame was worth it, was less impressed with the Arc de Triomph. The view from Musee d'Orsay was beautiful. We walked up to the second platform on the Eifel Tower (cheaper than paying for the elevator) but I was too chicken to go all the way up to the third platform. We did the evening boatride on the Seine, but didn't look for the times when the sun was actually setting. We went on a 9:30 or 10 pm cruise and it was still broad daylight. That was a little disappointing because the whole point was to see the lights of the City of Lights. So we just hung around until it was dark enough for them to turn the sparkly lights on at the Eifel Tower. Totally worth the pregnancy exhaustion.
I could (obviously) go on about this forever.

Any other questions or thoughts? Sorry for the novel!