Your only possible defence is either distance drove (eg to the end of your driveway) or you were helping someone who's life was in immediate danger. That or something like the police breathalyzer was ****ed.
If you've got nothing like that, you'd be a massive fool to plead not guilty.
Neither of which would be effective as any kind of defence or mitigating circumstance.
Doesn’t matter if you’re only driving a few feet. If you are over the limit and are in charge of a vehicle, that can include being near the car with possession of the keys, you will get convicted of drunk driving or being drunk in charge of a vehicle.
Again, saying someone’s life was in danger wouldn’t cut it at all. You are likely to cause more harm to life by driving drunk.
So no, neither of those would butter any parsnips.