I am have gastric bypass Feb. 26th. I have been waiting since June 2015 to complete my program requirements and waiting for my surgery date. Super excited and scared all at the same time. I know different surgeons require different pre-op diets but mine is no more than 800 calories daily, protein shakes only with the exception of 1 sub. of diet juice or sugar-fee Popsicles for 2 weeks. Really dreading that part, but I know it is totally going to be worth it. It is going to be hard to cooking dinner for my family for those weeks but something I will have to get used to.