I have pepsi and coke, diet of course. I have been unable to find a drink in the UK that does not contain aspartmane or whatever it is and I have had no problem. From posts I have read on this forum I am under the impression that the caffine can cause cravings for sweet things with some people but again I have not had a problem and I used to eat loads of sweeties before I became a low carber.

My advice to you would be have the odd one but don't have it as continuous drink and have water instead.

Hope this helps and hope you have a good holiday