I just had a resection on March 16th due to strictures, a fistula, abscesses and a perforation. Basically, I was a mess. Pre-op, I had D due to the antibiotics I was on but in general I was constipated (like 2 BMs/week) and had several blockages. I threw up multiple times a day and the pain was pretty annoying.
Post-Op, I have 0 pain, a tiny bit of nausea but I have a lot more BMs than I did previously. I have to take an Imodium every 1-2 days to keep things tolerable, otherwise I'll be in the bathroom every 30 minutes like I was before I was on meds. However, I would like to add that my CRP is over double what it was even with all of the complications I have, possibly due to post-op complications (I had peritonitis). Also, my CRP is already on the rise again, so I'm likely headed for another flare after only 1 month...
As for what you can expect - I was drinking water within minutes of waking up, eating toast by the next morning, out of the hospital Friday (my operation was a Tuesday). I was able to drive by Saturday night. I didn't have any trouble walking or sitting up or anything, didn't need any help getting in and out of bed (even 2 hours after my surgery). It was more comfortable to lay on my back rather than my side. Sitting up, it was more comfortable for me to be sitting with a pillow behind my back to keep it straighter. The chairs in the hospital leaned back quite far and were really painful for me to sit in, so I had to prop myself up with pillows to tolerate them. I didn't need to take any pain meds by Saturday, including when I was re-hospitalized with peritonitis.
This was just my experience though. I found the pain to be quite bad while I was in the recovery room when I woke up, but within an hour or so of waking up, I felt much better. Peoples experiences here with surgery tend to vary quite a bit though, I found it extremely easy. The first hour I felt like I had been hit by a bus or something, but after that, I really didn't find it bad at all. I hope your experience is similar to mine - minus the complications and how quickly mine is reoccuring though!