Burnt Toast, I have pedialyte on-hand from when my daughter was sick. It's still good, not past the expiration date or anything. Would that be ok to dilute with on test day, or do I need to buy gatorade? I know pedialyte is full of electrolytes and stuff, but its for kids, so I'm wondering if it'll work for me. I'd have to supplement with a little gatorade anyway, because I only have one bottle of pedialyte, so would that work?
Nobody is going to know that but you - by ordering some validity test strips online and test your S/G after using pedialyte. Do a Google search for drug adulteration test kits.

Also, should I stop taking the metabolism booster I'm taking 3 or 4 days before the test too? So I don't metabolize any more THC than necessary?
Yep.

I'm not going to go to jail or lose my job if I fail, it's much more important than that. I'd prefer to keep details to myself, just know that I absolutely CAN NOT fail and I WILL be watched, so substitution isn't an option for me
Unless youre revealing your username to every Tom, Dick, or Harry in the world, it would be beneficial on your part to elaborate a bit on those "details", which can serve to elicit more helpful information for your situation.

With that being stated, if youre not facing jail time or loss of employment, what are the consequences should you fail a U/A?