Usually it's as easy as installing the plasma-wayland-session package, then selecting "Plasma (wayland)" in the login screen.
For games in my experience, it works some of the times. Also, steam doesn't seem to inhibit sleep in wayland, so if you're watching a long cut-scene or using a controller, you might get interrupted suddenly. And don't even bother with Steam big picture mode.
You just change your session from X11 to Wayland and that's it. Everything should work the same, just with smoother animations and an overall snappier desktop.
Intel are doing great improvements with their drivers, at least i always hear about it in phoronix, and it's opensource, so no problem like nvidia, but they're a bit new, so only testing i guess
you can try, see how it feels, it's not like you are changing distros, you can just select in SDDM, and if it give problems just log out and select x11