I drank two beers, from 6pm to midnight, I had a EtG test the next day at noon I then drank a half gallon of water a hour before and used the bathroom three times then I tested. Will it come out diluted?

Yeah, well, either way it sounds like you're going to fail.

A fail is a fail. Congratulations for making sure they bust you on this test.

Yes, a diluted result is almost guaranteed in this scenario.

You will be lucky if they let you retest, which isn't likely. Why would you do such a thing before a test? NOT SMART at all.