It depends how many syns you are willing to use on drink! I had a pint of Guinness the other day, looked it up later and it was 9 syns!! Luckily I was still in my limits but what a waste, I thought!
You could decide to have a flexible syns day, set yourself a high limit, or you could stick to diet coke! I think spirits are 2.5 syns a shot...not too horrendous.