Breastfeeding and alcohol

On Friday I’m going to the bars with my best friend for her 21st birthday.

I want to drink with her as it’ll be the first time I go to a bar ever. My LO is almost 3 months old and I breast feed her. Only gave her formula a few times.

I’ve heard a few different things about nursing and drinking.

1. pump my milk as I’m drinking to get the alcohol and dump it

2. pump my milk after I’ve drank and dump it

3. Don’t do anything and that it’s fine and out of my system before it gets to my milk

Please tell me what’s right and how to go about this. FTM and don’t want to harm my baby. Tia