Vedettes de Paris
This Seine River cruise lets you see the French capital from the deck of a boat, with a glass of Champagne in your hand. The departure point is just behind the Eiffel Tower, and the full length of the tour will bring you up close to some of the city's best landmarks - including the Louvre, Pont Neuf, the Notre-Dame Cathedral, and more.
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They should let people grab the champagne/drinks before the cruise starts to avoid missing part of the tour
Maybe an audio guide would help?