I think everyone has covered practically everything...
Make friends with your WOCN or ET (ostomy specialist nurse) and take what other nurses tell you with a grain of salt. Most nurses think they're just fine at dealing with ostomies but they really only have the knowhow to deal with an ostomy so it'll stay on a patient who is literally just lying there in a hospital bed. I know a lot of what the non-WOCNs told me in the hospital turned out to be kind of wrong (stuff like: clean the area around the stoma with baby wipes [DON'T do that], use lots of powder everywhere [DON'T], etc).
Walking is key and so is using the breathing machine (incentive spirometer). I slacked off on the breathing machine after my second surgery because my pain was so bad (do not be afraid to press the button if you're given patient controlled analgesia [PCA]) and as a result I ended up with coughing fits... believe me, you DO NOT want to have a coughing fit days after abdominal surgery! Ack!
Be patient with yourself. Really good advice I got before my first surgery that has held true both times: At first you're going to be totally overwhelmed. You're supposed to be. Then in two weeks you're going to be doing a lot better, but you'll be hard on yourself because you expect to be doing EVEN better. And then in two months you really will see a big improvement. So just take it slow.
Really good advice from my surgeon: Don't be afraid of food. I know some people don't have an issue with this, but after my experience with UC and developing tons of food sensitivities (all gone now, thankfully) and generally just learning the association that food=pain it took a long time for me to be able to eat normally without fear. Chew like crazy and drink liquids with your meals and stay hydrated, but don't be afraid to branch out and eat something really delicious that makes you happy. Pizza with just cheese and sauce (no veggies or meat toppings) is on the low residue diet... just sayin'.
dx'ed UC pancolitis 5/12
past meds: asacol hd, VSL#3, apriso, rowasa, xifaxan, 6mp, cortifoam, pentasa, cimzia, canasa, butyrate, flagyl, cipro, prednisone, remicade, methotrexate, cholestyramine, cortenema
current meds: none!
step one: colectomy, end ileo 1/16/13
step two: j-pouch construction, loop ileo 5/1/13
step three: takedown 7/31/13