I've also gotten all of mine removed at once.
I was a uni student at the time and was signed off for the day itself and the next day. Depending on occupation, they sign you off longer because you aren't allowed to work on some of the pain medication, so this might be worth clarifying.
I did have a pretty miserable time, sorry to put it like that, but the majority of pain and discomfort was not actually from the wisdom teeth itself, but rather because they managed to sew my cheek onto the "hole" where the teeth were, that was incredibly painful. It got better at once when the threads were removed, but until then, I relied heavily on Ibuprofene 800 and cooling packs.
There will probably be swelling, which the ice packs are nice for, but if it's excessive, better get it looked at again, I was cautioned that if I develop fever or suddenly a lot more swelling I should go back in.
Eating isn't fun for a few days - I wasn't able to really open my mouth, but I think that was mostly because of the botched job sewing me up. Make sure to have very soft foods. I ate a ton of baby purees, but that's no hardship, I love them. Plus soup and ice.
Don't want to alarm you and add that I have a very slow healing process, plus tend to get swelling easily, so it might be a lot better for your husband. My partner didn't get all of them removed at once, just two, and said apart from taking one pain killer and eating soft food for two days, he was totally fine and hardly noticed anything after the surgery.