1. though there is no chandelier crash is there a chandelier? 2.how is the masked ball scene? how is the red death costume? 3. is carlotta an on-going chracter or is she killed early in the film? how is her death? 4.is this R only for gore?
Here are the answers to your questions, as best as I can answer them and may include spoliers.
1- You are right, there is no falling chandelier scene, but there is a brief shot of a chandelier in the opera during one of the opera scenes, however it is very hard to see, you can really only see the lights on it. To my knowledge, the production was on a tight budget and could not afford the classic falling chandelier as it appears in the other versions. 2- The masked ball scene is not as good as it was in the 1925 version. Mainly because the grandstair case is missing, however it still is rather a luxorious production design, with authentic costumes. Robert Englund's (The Phantom) costume of Red Death is probably the high light of this version and this is the only scene in which the Phantom wears a mask; (the skull mask) depicted in the original novel. 3- Carlotta is only in three scenes, she appears after Christine is "transported" from New York City to London, and Carlotta sings for a brief period of time. The second scene, Carlotta argues with Barton about Christine being her understudy in her dressing room, she then goes to the closet and discovers the stage hand's skinned body. The last scene is at the Masked Ball, she dances with the Phantom for a little while, unaware that he is the Phantom, before the Phantom seduces her and then kills her off-screen. Her decapiated head is then later found in a bowl of soup. 4- Yes, the film is only rated R for graphic violence, there is barely any language in the film and only a tiny brief nude scene of a woman's breast, but other than that, it was rated R for the violence.