IMHO.

DO NO UNDR ANY CIRCUMSTACE repeat that "excuse" again, even "if" it were the truth.

Own it. (Even though is was a BS ticket just because you were not 21) It is what it is.

Saying that you were somewhere else other than a bar will alleviate the fake ID question. Whether you had one or not. ( If you did, do not admit it)

Explain the under age DUI law in GA as a matter of fact, not as an excuse. ex. but I was not over the .08 limit. Own it.

"I made a mistake. It was a gross error in judgement. I learned from and am now grateful for the experience. I changed my behavior and will never repeat it. Thank you for asking."