Sarah's hasn't ended yet, but to answer your question, you'll definitely need insulin when it does end - so things will undoubtedly change. My daughter has been in the honeymoon phase since diagnosis about 8 months ago. Her Endo tells us she's taking less than 1/2 the insulin she'd be taking if she wasn't honeymooning. Right now she takes a total of around 10-13 units of novalog. She's on a pump, so that includes her basal which is at 5.8 units, the rest is for meals. So I guess we're around the halfway point. Her control is pretty good. She has more lows than highs, and probably ends up in the 70's at least once a day, in the 60's 2-3 times a week, and in the 40-50 range about once every two weeks or so. Her needs change a bit here and there, so I look at all her numbers pretty frequently and usually make at least one minor adjustment each week.
I'm not sure if that helps at all. I get the feeling that control is somewhat more difficult to obtain once the honeymoon has ended completely, but we haven't experienced that yet.