Seedrat, I currently have 3 rain barrels and am waiting for more from the city. My neighbors promised to give me their extra rain barrels too. I hope they will be delivered soon.
I do keeps the potted plants in a tray. But I don't have enough trays for all of them, so it takes a while before I can finish with switching them and watering them.
I stopped sprinkling my garden last July after the meter was put in. I think many of my plants love it dry because this spring I discovered a bumper crop of Helleborus and Mertensia seedlings!!!
But it is distressing to see many drooping plants under the sun like today. So far, I have been using rain water from the barrels and from my kitchen grey water to water transplants and veggies. I may have to sprinkle the rest of the garden in a few days if it does not rain.