I, like many of the other posters, would say prepare for the worst and be grateful if your experience is better than that.
I had my tonsils out when I was 19, and it was awful. It is the only time in my life I've had general anesthetic, and it made me vomit for about 24 hours after the operation. (Very painful, needless to say.) That, combined with the bleeding, made it very difficult for me to take anything orally. I ended up with suppositories for the pain, and managed to choke down enough water to stay out of the hospital. I was eating again in about a week, and felt much better in about 2 and 1/2 weeks. My overall health was much improved by the operation, so in the long run it was worth it. I would say that with small kids, it would be about a week before you are ready to care for them.
Maybe you can get some family out to help you, or line up a short term nanny or temp. daycare while you are recovering. Your husband may be eligable for leave under FMLA, if he doesn't want to use his vacation time.
If you are still breastfeeding, you might want to talk to your doctor in advance about the medications. Some antibiotics can lead to thrush, and others are not approved for nursing moms. Good luck, and hopefully you will be one of the lucky ones with a quick and low pain recovery.