Hi, if it helps I went away for a week to Spain at May half term with hubby and kids when I was on week 3 and drank water and shakes only for a week. While it was hard I could see myself losing weight rather than putting it on.... It really was worth it! After 7 weeks on lipotrim I've lost almost 3 stone and am now refeeding! A week into refeeding I haven't put any weight on, so far so good! Going away again next week and terrified to eat in case I put any weight on, but I will try to be sensible, mostly - and maintain my current weight. So if I were you I would go for it, have your 4 days away and stick with it - good luck xxx