I second honeypig's suggestion. You want an advocate there to catch the small details. Chances are, your medical staff will be wonderful, but many times they are stretched to the limit. I once caught my dad's nurses giving a specific medication immediately after his lunch when the instructions specifically said not to take it at meal time.
If you can get away with it, bring some earplugs. Sometimes those pings and dings can really get annoying and sometimes you'll get stuck with a fussy alarm that won't shut up (which is another reason why an advocate is a good idea.). Don't be like my mom, who, as a former physician, took it upon herself to shut up her monitors. She also liked to mess around with her saline drip without telling the nurses. That really went over well.