If you're exceeding the MAUW, make sure you mention it. If the plan for the battle includes losing some machines due to disregard for the orders, then they won't be surprised. However, if the plan doesn't call for that loss then perhaps there's a plan to use those machines tomorrow.
It was mentioned before that the rules are not just for safety of the crew, but also they indicate what risk has been accepted by higher command. If the risk has been accepted then so have the consequences which include the chance of loss of resources.
This is quite valid in the SAR scenario. If you purposely break a machine to try and complete a mission that you can't otherwise do, then what happens to the following missions.
Again, I'm not saying don't break the orders, just make sure you have considered the consequences.