It's hard to do restaurant/bar work and stay sober. Remember.. some of those people who tasted that alcohol are not "normal drinkers" at all. They might be good at hiding.
You did great. Focus on the next thing you have to do. Take that focus off what happened to you. What are you doing today?
p.s I don't actually think drinking alcohol in any quantity is normal. I think it is very strange.It is a poison that people willingly drink. I gave up smoking several years ago and pretty soon I realised it was a cocktail of poisonous chemicals I had been taking in to my body. I am starting to feel that way about alcohol.
Good luck. It sounds like you have a lot of lovely life ahead of you. I have 35 years of drinking behind me. Don't leave it that long. It is progressive. It is dangerous.
for getting through the evening.