Parades aren’t burdensome unless they’re turned into something unreasonable. A town hall or an AMA, is also a parade, just that people don’t think of it as such, but it is.
Most CoC’s (TacHel) I’ve seen have the Reviewing Officer give a tip to outgoing and incoming COs, but focus on the unit and it’s members’ contribution to the formation’s order of battle.
Heck, even for the presentation of a Squadron’s Colours by the GG, I’ve only seen ~6/7 hrs total practice over a couple of days to carry out the ceremony. I have never seen a unit take a week to practice for a parade.