Dine in Latin quarter in Paris. Tons of different types of restaurants, all begging for you to come in. Fixed Price 3 and 4 course meals are usually quite reasonable, or you can get a gyro or pizza slice for kids if they prefer. Good Italian Ice cream is available to finish the deal... Cite or St Michael metro stops are closest...St Michael is right there.

Parks are free and full of families and kids playing. Kids usually make friends in 9.5 seconds so its fun to watch your young ones start making friends with local kids. Park by back of Notre Dame or Luxembourg Gardens are free, fun, and a nice place to spend some time. You can momma can sip wine while kids explore.

Depending on size of 8 year old renting the bikes from the stands is a cool way to explore. My daughters loved scooting around Paris on the Celib rental bikes.