According to their website, yes, with a reservation. This is from their website: Access to the museum is free for all visitors on the 1st Sunday of every month. Reservation is compulsory.

quando sono stato io non c’era la seconda opzione, ho comprato i biglietti sul sito x essere sicuro dell’orario e non fare code. col pass entri ma non puoi prenotare l’orario e fai un’altra fila. quando ci sono stato però non ci sarebbe stato bisogno di prenotare, perché c’era poca gente. io non comprerei più i biglietti e mi presenterei col pass

Yes, a ticket allows you entry to all the galleries. However, I purchased a ticket in advance which gave me: Combined ticket Musée d'Orsay - Musée Rodin which cost 24,00 € and no waiting in lines Valid for 3 months from the date of purchase for a single entry in each museum. No reservation required. Musée d'Orsay: Includes access to the Permanent collections and the Temporary exhibitions, subject to availability. Full list of current exhibitions on the musee-orsay website Musée Rodin: Includes access to the Permanent collections the Temporary exhibitions shown in the Hôtel Biron, but also to the Sculptures Garden. ____________ -do an internet search for this special ticket & it will come up on the museum website- I believe the first Sunday is free but likely very crowded so good to avoid and museum is closed on Mondays, I think-check the website for holidays.

Si, había 2 plantas superiores cerradas porque las estaban remodelándo. Pero los muebles y objetos estaban expuestos en el 2 piso

no. when you enter the ticket is validated and when you leave you cannot re-enter.

Se fa il cambio data si

No

Orsay es impresionante por la colleccion de impresionistas. Tiene obras de Monet, Renoir y las salas se sienten intimas. Habra mucha gente como siempre asi que se recomienda reservar (dia y hora de entrada).

Anything you Really want to do should be prebooked.