We are arriving Paris mid afternoon in mid July to leave the following morning for home - (CDG 1030hr departure). Plan to arrive by train at gare de Lyon and stay at the Hotel Corail. Suggestions on best dinner cruise to see the sights and meal together and stroll the area.
Find a place to enjoy dinner while you're strolling. Then take a cruise on the Seine after dark when the lights are on. Don't have your one dinner in Paris on the boat.
Agree with the previous poster that the boats aren't known for good food. On the other hand, we've eaten well at the Brasserie l'Europeen across the street from the Gare de Lyon train station. You can take a ride after dinner.