Hi, Terri, and welcome.
I can't speak to the use of acrylics, but your comment about using oils, that:
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(I think it would drive me crazy to have to wait even overnight or worse days to fix something I was unhappy with!)
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caught my eye. In oils, you usually don't have to wait to fix something -- that's one of the pleasures of the medium. In fact, usually you wouldn't want to wait until the paint is dry before you repaint. If you're painting thickly, you can apply a thick layer of new paint on any time. If thinly, you might need to scrape off the still-wet paint that's in the area you want to rework.
About the only in-progess waiting time is a 10 or 15-minute break to let the paint you've applied "set" a little, so that you can paint over it without just winding up with a muddy mix.
In fact, you'll find many posts here in which hints are given to keep the paint from drying too fast and making it difficult to come back later and paint "wet in wet", or blend, or whatever else a workable medium will allow. A dry oil painting actually creates its own troubles with respect to getting additional paint layers to adhere. This often requires the use of a tooth-restorative application of oil or retouch varnish.
At least you have young kids to blame for smears in the oil paint surface. It's my own fingerprints indicting me on most of my paintings.
Again, welcome. Have some fun here (it's a requirement of membership). You've already begun learning.
Cheers