I guess it pretty much depends on how your active brigade
handles the NS unit.
Too bad my brigade that is incharge of the NS units during my
active days are super on, the reservist MOs are all given
instructions on how to handle the MC issues.
But on another note: If you do have urgent and valid reasons prior
to incamp, just talk to your NS CO/OC/PC, even if cannot defer,
arrangements can be made. Like last time, the NS CO gave all
part-time students stay out for studies and book in by 630am next
morning.
The NS CO/OC/PC are also working ppl, compare to the regulars, they
are more understanding towards reservist, need not necessary have
to keng on every ICT one. 
