Scared wife,
Your husband should get a CEA blood test pre-surgery to establish a baseline.
Also, if he is physically up to it, he should exercise and eat right over the next couple of weeks to be as strong as possible for surgery.
The recovery from open surgery is longer. I had laparoscopic and was out of the hospital in 3 days. My surgeon told me that if she had to convert to open surgery I would have been in the hospital for 7 days.
Post surgery - chewing gum after surgery can help get stomach juices going again to speed up normal bowel function.
Make sure that the hospital provides a tube to blow into to prevent pneumonia. I got the tube but I didn't take it seriously. I got pneumonia.
Don't take pain meds on any stomach. I can still sometimes feel the room spinning.
I read something recently about Tagamet (cemitidine). Patients who took Tagamet for 5 days pre-surgery and 2 days post surgery had much lower recurrence rates. Ask your surgeon about it.
There are probably a lot of other recommendations that are pretty standard. The above are just from my personal experience.
Jack