I had, what ended up being, a double resection in February. I got some of the same advice and packed a lot of stuff but most of it ended up just sitting there.
IV pain pump was there when I woke up. I also had access to diludin? - some sort of FANTASTIC injected pain med. I could only have it every few hours but man, it helped so much.
Honestly, I didn't do much. I didn't wear any underwear. My incision was near my bikini line and HURT. I didn't get the catheter out until day 4. I had huge issues with bowel leakage so I laid on pads in the bed. I didn't put on PJs - it was too much trouble. I wore the hospital gown only. I brought all that stuff but it just wasn't practical.
I did bring my own toiletries but didn't get an actual shower until day 5. On day 3, I leaned over the sink and the tech washed my hair and sponge bathed me a little. It felt amazing and I didn't care that someone else was seeing my naked self.
I really mostly slept until about day 5. I would flip open a magazine and fall asleep a few minutes later. I watched TV on and off, day and night, as I dozed.
Things that were helpful: my own pillow, leg warmers and socks (it's sometimes cold!), cell phone and charger, hand lotion, some magazines. I had a friend bring me face wipes as my face was REALLY oily afterwards. Something about the meds I was on. I also brushed my teeth in the bed with the little spit cup thing. I wore a baseball cap until I got a shower as my hair was super oily, too. I brought my laptop and didn't drag it out until the day before I went home. Just didn't feel like it.
Things that perked me up: lots of homemade get well stuff. I work with children and I got TONS of cards, garlands, signs, etc that they made. My husband decorated the room with it all and it brought a smile to my face (and every nurse/doctor that came in!).
I stayed in 8 nights. I had a rough go of it, maybe that was why I didn't use 20% of the stuff I brought with me. I put on PJ pants and underwear the morning I went home and it was not comfortable but better than mooning the hospital on the way out =)
I'm sorry you have to wait so long for yours but I hope it goes really well.