Eiffel Tower, Louvre, Arc de Triomphe, Sainte-Chapelle — timed tickets online. Reserve dinners (Monsieur Bleu, Café de l'Homme, Girafe). The Relais de Venise takes no bookings.
Tap any contactless card at the turnstile, or load a Navigo Easy in the Île-de-France Mobilités app. From Trocadéro, Lines 6 & 9 cover almost everything.
Sunday many shops shut — the Marais is the exception. Monday the Musée d'Orsay is closed; the Louvre is open (it closes Tuesdays instead).
Doors 6 PM, show 8 PM. No backpacks — small shoulder bag only; water must be plastic, under 50 cl. Line 1 runs door-to-arena from Porte Maillot.
The Eiffel Tower glitters for five minutes on every hour after dark (first show ~10 PM). The Trocadéro terrace below your base is the best vantage in the city.
Emergencies 112. Service is included on every bill — round up if you wish. Greet with “Bonjour” on entering any shop; it opens every door in Paris.