If you use the Arrow key the popup description/ tool tip will appear automatically without the use of a mouse to hover.
The first two times I read your comment, I thought this line was talking about something else entirely -- certainly didn't register what you were saying.
For others in the same boat, what he's saying here is:
1.) With the file explorer as the active window, USE THE ARROW KEYS to navigate to highlight the folder for which you wish to know the contents' size.
2.) Pause for hover text -- do not move mouse or anything else for a moment -- hover text will show Date Created, SIZE, and an abridged list of files therein.
3.) Repeat as needed.
4.) Profit.
I don't know about the rest of y'all, but THIS is the answer I was looking for, even though I missed it at first. Thank you, ThrashZone.