What to do?? Trying for a baby and drinking alcohol - is it ok?

Hey just looking for advice? 

So it's my birthday Saturday and me an oh are at a wedding all day/night, we have been ttc for 3 cycles an I will be 8dpo on Saturday. 

I don't know what to do about alcohol? I would like to have a few drinks to celebrate but I don't want to ruin any chances of conceiving. Do you think having a few drinks could do that? 

thank you