Maybe I shouldn't have to say this but if you're planning to booze it up, and who can blame you, take a cab to and from the venue or have a friend drive who for whatever reason doesn't drink. Court clerk in the Bronx for 25 years, filled out the paperwork for hundreds of drunk driving cases. It's easy to reach .05 on the breathalyzer which is driving while ability impaired, the lowest level. And refusing the breathalyzer will just get you in cuffs sitting in jail even faster. I don't want you to miss the potential action on Monday because of an error in judgment Saturday!
Enclosed is the DMV section that gives potential penalties. Based on my experience, a first time offense will not mean jail unless there are unusual circumstances, and even a second might not. But a lot depends on the judge.
https://dmv.ny.gov/about-dmv/chapter-9-alcohol-and-other-drugs