No a mercy mission can only be used in extreme emergency. Where a person or persons have a risk to life.
No flying ops are different. The lbs holds all the requirements for maintenance that is required on that aircraft. The lbs holds how what when maintenance is required.
Anything down to washing your aircraft can be considered maintenance. If you look at your M/R it will tell you what your maintence schedule is. This you can only change by changing your lbs.