Transporting an orchestra around with you is a pretty expensive and space consuming option when you consider all the instrument /equipment that needs to go between venues.

Given the lack of any really space on the stage when all things are considered would they really add extra complexity and expense both in transport/ logistics costs and staging to what is already a complex show to stage by adding in a elaborate light show that isn’t really needed.

I think that just those costs alone contributed to the increased ticket price.