Firstly, I am so sorry you are going through this too. It is a truly shitty shitty thing to have to deal with. I had a natural mc last year at 12 weeks ish; I'm not going to lie it was pretty awful but I had a huge amount of comfort from being at home with my husband.
This time at 7wks I've not been so lucky, things weren't happening naturally so I had my medical management yesterday. Here you are given sublingual misoprostal tablets and sent home. They also take your bloods/bp/sats/temp etc and load you up with pain relief and antinausea meds. Unfortunately for me it doesn't seem to have worked, but I am in the minority (1 in 10 it doesn't work for). I was quite sick twice - once only about 15minutes after taking the misoprostal and all over the car. The second time was a few hours later when I was in a lot of pain (I had thrown up all of my analgesia).
Even though it hasn't worked for me, I am keen to repeat the treatment but have to wait 72 hours. I have found the nurses looking after me to be absolutely wonderful, they called to check on me yesterday afternoon and again this morning. I really hope it works next time as I want to avoid surgery.
I am sure in hospital you will be well looked after. For me, I wanted to be at home, but having inpatient treatment will mean that they can address additional pain relief if you need it. I was wailing like a banshee, rocking back and forth on the edge of a chair. I've never been through labour, but to me I imagine they were what contractions felt like. There's also the added benefit of not having to rely on your poor husband dealing with the fallout from exorcist style vomiting in the car/house/all over myself.
I found I got really really hot when the pain was bad and ended up stripping off my tight PJs, so a loose T shirt or similar might not be a bad idea. Also I have long hair, and could my poor husband find a hair tie when I needed it? Could he heck.
Once again, I hope it goes ok for you. If your nurses are as awesome as mine they will make sure you are ok. Hopefully this time next week we will both be physically back to normal, although I know it'll take longer for the emotional wounds to heal. :(