The best beginner friendly course is Winget, IMO. Most the holes are under 300' and the lines aren't super tight, but you still have to work gaps and shape lines. Lookout Park in Tega Cay is an OK 9 hole course tucked away in a nice neighborhood that's not too far from Winget.
Renske and Eager Beaver are both pretty solid. Eager is more broken in, much less rough to deal with. Renske has a few spots where a shanked drive can have you searching. Eager is my #2 pick for you two.
Sugaw and Reedy Creek are along the same lines as Winget. Short, beginner friendly holes but you'll still have to hit gaps and shape lines. Both of these are pretty close to where you'll be. Reedy is more interesting IMO, and has the distinction of being Charlottes oldest course.
Mint Hill is a fun 9 hole course that makes good use of elevation, but it's a bit out of the way if you don't plan on playing Scrapyard as well. Scrap is a more difficult course than I think you're after.
Rescue Squad Park is a really fun 9 hole course with lots of interesting elevation in play. This is worth checking out and playing twice, it's really good.
If you feel like going for some ace runs you can check out Pinewood Elementary, Warlick Academy, Lowell Elementary and Springfield Elementary, though all of these are very short, very open and pretty boring aside from the chance of acing.
Lastly, Crooked Creek Crossing, while out of your way on the SE side, would make for an enjoyable round for you two.
If you search for any of these courses on
www.youtube.com/thediscgolfvids you'll find videos of them all.