Hello,
from past experience I've noticed that drinking any amount could set your heart off at any given time during rest ( if you have any form of heart condition, SVT, or VT ). When you say a few, how much is a few? I remember clearly some years ago, I was having a great night with good friends, didn't over do it on the alcohol, had a six pack in 5 hours and suddenly started getting palps and then boom full on svt.