The best advice is to plan ahead... Im alright with meals, but if I don't have snacks easily at the ready, I am tempted to go off plan.... and on the first week is when the temptation is the greatest.
As for your other question, I have no idea, so I will leave that for other members of 3FC to answer.
Best of luck
173 as of Mar. 24... April goal, down 5lbs