Crisis Management - How real does the test need to be?

Hi, I have a bakery. I am looking to test my crisis scenario and I am wondering the best way to do it. My "mock crisis" would be if we had a prolonged power outage. The thing is, I'm not trying to pull the plug on my entire operation to actually test this crisis. If my crisis management team and I have a meeting to just discuss this scenario in detail and we make sure to document our discussion, the tasks we would complete, our plan to get back up and running once the crisis is over, the gaps we have in our plan, etc.... Is that enough?

Mock scenario is all you need!  Please don't actually pull the plug lol

The purpose is to ensure

A) your company is aware of the impacts of a crisis in hopes it prevents bad actors from making ill advised decisions

B) work through known potential issues so that you can get up and running safely, as quick as possible without sacrificing your brand/goods/safety

This is an opportunity to see how much things like, temporary off site warehousing, generator rentals etc actually cost, and can you get what you need quick enough

run it just like you would a forensic mock recall. --- 

MOCK being the key action here.

If you really want to go that extra mile, go out and interview some employees that would have responsibilities relating to said crisis: "Hey Joe, I'm running a crisis scenario and this year we got prolonged power outage. If we were at X hours of a power outage, what would you be doing?" "Hey Sue, I'm running a crisis scenario this year on how we'd react if we lost power. Let's say we just lost power, what would you do?"

This will help you get some real world feedback on if any additional training might be needed for key positions.