Congrats on getting your date, i'm on opti now, surgery dec 18. My recommendation, get a cup with the screw on lid and straw. Makes getting the opti down easier. Tastes fine but has an off putting smell. This cup helps 100%.
RNY - Dec 18/2013
HW- 333 lbs. Approved for Surgery- 285.4 SW- 272. GW-160-180
I've got Dr Rotstien too and my surgery is Feb 24. He seemed really nice when I met with him. Good luck to you and if your able let me know how everything goes!
(Opti is going to be my hell, thankfully it's only 3 weeks )