The advantage of programs like this is that it does teach you what a 'normal' meal looks like.
The disadvantage is that it removes personal responsiblity for your life. Successful long term weight loss is about ownership of your life style. Making healthy life style choices not because that is what you should do but - it is because that is who you are.
Do the program by all means...but please think about what you are doing!
To quote, "An unexamined life is not worth the living." If you want a different result than previous attempts - you have to try something different. Most people will pay a fortune for a program, course, plan, spartan exercise regime, bleak fad diets, gym memberships or whatever - anything but to avoid getting honest with themselves and have to consider permanent real inner change. That is a very human thing to do...but it is not the way of success.
I hope this journey has a successful outcome for you. There is a better future out there...grab it!