Hey there and
I'm not positive I know what a lapband is, but I know the protein drinks that you have to buy and use on the MRC program are the same gelatin based ones that other sites sell for people who are on very calorie restricted diets due to gastric bypass surgery for instance, so it should be a good fit for you.
The menu is very specific, which actually made it easier for me. Less to think about. I highly recommend taking advantage of the Connections classes your center should offer. Be prepared for lots of sales pitches at your weigh-ins. Decide ahead of time if you are comfortable taking all the herbal and vitamin supplements they will try to sell you. They are not all required.
Come on here as often as you like for questions or just to vent or get kudos. I suspect the forum will be picking up in pace with all the inevitable New Years resolutions for weight loss. Should be fun!