I've always stayed in the hospital gowns for the first day or so, then switched to my own bathrobe or nightgown. I don't really like pajamas, and switching to my own nightgown doesn't work out that well while they're still fiddling with things.
I also opted out of the morphine, after it made me itch like crazy with my second one (honestly don't remember about my first - I was in awful shape from all the drugs, lack of food, etc. and it's mostly just a miserable blur in most ways). Unfortunately, the anesthesiologist with my third one didn't ask - he just went ahead and added it to my IV. So, I got the insane itching that time, too. With my last, I got the PCA. That worked way, way better for me. I took a hit before i got up to use the bathroom the first time, and just before I tried to sleep at night, and that was it. I have found my views on pain vs. pain medication to be somewhat atypical, though - I'd rather be clearheaded and in pain than muddled and/or numb.
I definitely agree about having someone there with you, if possible. I've been really lucky, because my mom lives close to the hospital, so my family stayed with her, which left dh able to come and go from the hospital as he pleased. He stayed with me at night, except with ds2 (dd1 was only two, and he didn't like leaving her all night), and was with me most of the day, as well. It made a big difference to have someone on hand who knows you - not just to help out with the logistics, but sometimes you want to talk, yk?
Oh - and not so specific to recovery, but I always bring a good book (Terry Pratchett, by preference) and my iPod (well, it used to be my CD player). If the baby happens to be sleeping, and there's nobody around, I find music the easiest way to get ouf ot the hospital in my head...and a book always makes meal times less boring. :)
Someone else mentioned that she had no breastfeeding issues. I had an awful time with ds1, but when I look back, I realize it had more to do with the constant interference (I know they were trying to help, but they didn't) from nurses, and people just always being in my face. I do best when I can just take it easy and work things out for myself, so having a constant stream of contradictory advice and people checking my nipples and the baby's latch and all the rest of it just drove my stress level through the roof. I don't think my problems had much to do with the c/s. With my second, it was also rough, and I do think that was c/s related - dd1 wasn't ready to be born, and my body wasn't ready for the baby to be out, and I had a lot of issues with pain and lack of milk. And, with my last two? Easy as it gets. DS2 nursed like a champ from the first feeding (in recovery) and so did dd2. The most common explanation I hear for c-section related breastfeeding difficulties is the mom's pain making it difficult, but that wasn't my experience at all! It hurt a lot, but everything hurt, and it really wasn't a factor.