What an awesome trip. I second the recommendation for the bike tour of Paris. The night ride is particularly fun. I did it two years ago and had a blast.
I've been to Paris a handful of times. I can talk for hours about the city and have way more tips and recommendations than I could put in a message, but if you have specific questions, PM me. What neighborhood are you staying in? Frankly, my favorite thing to do in Paris is taking an endless stroll, mixed with a little light shopping, eating and people watching from a sidewalk cafe. I have enjoyed any number of the museums and historic sites, but I tend to save them for a rainy day.
Also, dining in Paris can be a bit overwhelming. There are more places to eat than you could ever imagine. If you don't go over there with some specific recommendations, I would ask for some at your hotel's front desk. Depending on your tastes and budget, they should be able to point you in the right direction. Ask them to make a reservation for you. Especially this time of year, they're a must.
If you can, try to sprinkle your conversation with a few choice French phrases, even if it's just the basics. They appreciate that immensely, and it will get you off on the right foot. I have found Parisians to be very helpful and friendly, but they adhere to certain niceties (like saying hello and goobye when you enter/leave a shop) and expect others to do the same.
Have a wonderful time. Your itinerary sounds fantastic and I look forward to
your trip report.
Kate
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher