Makes sure your surgeon and anesthetist explain the procedure and its risks thoroughly. Have they made you aware of the recovery time and length of hospital stay? Type of anesthesia?
Always get a second opinion when it comes to major operations(unless its an emergency)
Give a full past medical history.
Give a full drug, allergy, and family history to your Doctors. Also inform them of your drinking/smoking habits of you have any.
Try to keep a friends or relative with for support throughout.
Make sure to bring a few extra essentials if your hospital stay will be lengthy.
Stick to the hospital food as its tailored for you current condition. If you want to deviate, make sure to ask your Doctor on what you can or can't eat.