Hi,
guest network is typically open, so 802.11r is not applicable, as there is no encryption. By default both "over-the-ds" and "over-the-air" 802.11r methods are OFF. The "over-the-ds" flavour will only be enabled when the "fast-bss-transion" is also enabled.
So let's forget about 802.11r with any open networks.
802.11k is not enabled by default and it is recommended to enable it, add "radio-resource-management" to the WLAN profile to turn it on.
In general as with any deployments it is never just about turning some features on and off. Physical design is the most important. Internet uplink and wired services are as important, especially when it comes to a guest wifi service. There are number of documents that you can look at. Attaching a few for your reference.
regards,
Slava