Best advice I ever got was talk what you want, then put half back. It helps me out when I am at parties and actually behaving myself food/drink wise. Or maybe you can make those days maintain days where you get the calories you would need to keep your weight instead of your normal lower calories?
Have a great fun weekend! Let us know how you did on Tuesday.
Sarrah

the rest of our lives will have these holidays and indulgent weekends, so don't make yourself feel bad over it as long as you're doing well on your plan the rest of the year.