Pre-op surgery to do's Finally, got the packet from the WLS dr's offices. No packet, just two pages of to do's and don't do's. First it's 2 meals will be drinking a high protein shake. For me, it's Advantage skakes, by Atkins. Went looking for them at Costco--don't carry them anymore. You could get 24 cans for about $14. Now finding them at a local grocery for $7.99 for 4 shakes. I know I'll go on