Our hotel arranged a driver for us to see the falls. On the way back we stopped at The Laos Buffalo Dairy. I would highly recommend a tour of it.
https://www.laosbuffalodairy.com/ We also stopped at Ock Pop Tok and bought a beautiful wall hanging. https://www.ockpoptok.com/visit-us/
If you want a special dinner go to https://www.mandadelaos.com/
Also, I don't remember the name of the dinner boat we took but the service was food was amazing. Go ahead and spend the money and get a good one.
Have a great time! We fell in love with Luang Prabang. One more thing, we did a Orange Robe Tour and found it to be very interesting.