I agree with the advice offered above. Another suggestion, if you think you'll be tempted to eat at all, would be to bring an extra protein packet. If you feel like you'll be tempted to eat, for goodness sake, have that over anything else. It shouldn't set you back.
Also, if you'd prefer to have something other than simply water in your glass, find a 0 calorie beverage with the approved sweeteners in it, so you can have a "treat" and it's not so obvious to others that you are celebrating "lite" this year.
Happy New Year!