Dont know if anyone wil be able too help me, but i really wana know..... my mum has my daughter once a month so i can go out and let my hair down, on this day if i wanted too have a drink could i eat a salad sandwich before hand...and be ok and safe too have a drink?? i know it would make my weight loss smaller for that week! would it do m any serious harm? if i stuck to the plan completely for the other 30 days in the month?? xxx