No, mothers or female guardians may stay with their children in their changeroom area if they do not wish to watch one of the performances and take them home once they are finished and return to their change area.
Yes, a ticket is required for your child in order for them to have a seat to watch any acts they are not involved in. All students are more than welcome to stay and watch dress rehearsal at no cost, allowing parents to take pictures and Video tape (note- only one parent during dress rehearsal because of limited seating).
Ballet is the foundation of all dance. No matter what style you are doing, hip hop, tap, jazz, modern, ballet will help you. Ballet even helps sports professionals improve their balance, so it would definitely help you as a dancer. I would recommend taking ballet if you are able to.