I just want to make sure that I don't need to adjust anything, besides bake time, when using a cake recipe for cupcakes.

I've never done anything differently. I'm sure there are people who do, but I haven't had any problems.

I use cake recipes all the time...just bake for the alotted time for cupcakes...

Most recipes can do both, but not all.
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Other than the baking time and sometimes the oven temperature, I don't change any of the recipes for making cupcakes.

I've never understood this question. I make quick breads in loaf pans or cupcake liners, cake recipes in cake pans or cupcake liners and even bread recipes into rolls. It's all the same to me.