We are huge Paris fans so we tend to spend a week or longer at a time. But if you would rather see m

We want to travel to Paris with our two teenage daughters in December. We have seven/eight days so we would like to spend three or four in Paris and then travel via train to another city for the last days and fly out from there.
With 7 days, I would stay in Paris for the whole time, making all inclusive vacation packages a day trip or 2 to Chartres and Versilles for example. If you actually have 8 days on the ground, not including arrival and departure days, you could consider two or three days in Amsterdam, Bruges or Strausbourg.
We are huge Paris fans so we tend to spend a week or longer at a time. But if you would rather see more locations, I agree with the Eurostar to London. In that case, I would fly into London and out of Paris to avoid the high departure all inclusive vacation packages taxes at Heathrow.
I also would spend the week in Paris since there is so much to see and do there, especially all inclusive vacation packages if this is your first time to Paris. Make up a list of sights you want to see in Paris and see if it fits into 3-4 days.
Don't waste your time going to another country..Go to Versailles one day and do Paris..Lots to see, do, experience. Hop on Hop off and batobus (same ticket) will set the scene. take full advantage of this. BTW there is an infrequently museum/monument behind Notre Dame.. The deportation memorial from WWII. Have a great time..The City of Lights will be sparkling!!
I have spent a lot of time in Paris, and 7 days is not enough time to experience the city. The best thing about Paris is seeing it in a leisurely manner, sitting in the cafes and bistros. If you must leave the city, go to Versailles, as amer-can suggested. My late mother and I went there and took the wrong train and ended up in St. Cyr. It was something she spoke of until the day she died. We eventually all inclusive vacation packages made it to Versailles and had to relax at the McDonalds with coffee after getting lost.
I agree, stay in Paris and take day trips. I haven't all inclusive vacation packages been to Chartres, but that would be first on my list for another trip. The best thing I have ever done in Paris is take a guided tour of Pere Lachaise Cemetery. It took several hours and was a wonderful history lesson of Paris. The guide planned all inclusive vacation packages the tour especially for us. If you are interested I think it was Insight tours. If you go to her website it will describe the tour we took.