You can check with the department to see if they reserve classes for majors too. My daughter (different school) couldn’t go to orientation until almost the last session and we found that her department had reserved all her theater classes. The only negative was that the western civ class they normally steer kids to only had late (on Friday) discussion groups open. Well, we changed her schedule from psychology to English, moved the discussion group to 2 pm (English was at 1 pm) so it worked out pretty well.
Other daughter at an engineering school had her entire schedule handed to her. No choices.
Remember there is always wait listing and begging profs to let you in to a class too.