It's always said Art is incredibly time consuming but neither of ours have been overwhelmed by the workload (although I know son's art teacher would have liked him to spend a little
more time on it
). Advantage as far as I'm concerned is daughter will finish her Art GCSE in about two weeks so that's one done and dusted and all the more time to spend revising the rest.
I'm relieved to hear that having had and lost the gcse Art argument with DD. She does seem to have matured as an artist and actually completes work and moves on. Having said that she might spend ten hours on a weekend on a canvas for her own pleasure, may be she's building a secret portfolio in advance.
I see art as her way of relaxing and getting away from the phone/ipad mini/laptop screens that otherwise dominate.