Fruit smoothies?

I have been making smoothies for awhile now usually 2 pitchers at a time. I have to go cups that i get from restraurant supply stores and I go ahead and pour them into them and then put them into the freezer and whenever I want one I'll pull one out and let it thaw out. But I was wondering if I just put them into the fridge instead so I dont have to let them thaw which takes forever... how long would they keep before spoilinig. I usually have a combination of bananas, blueberries, peaches, strawberries and a juice if that helps you give me an answer.