This feature is released to production. 

This option is available on OLO admin setting page (disable/enable) guest checkout. 

This is available with build 3.0.5 and higher. 

Hey Sean, we will look into this and add to the plan accordingly. 

This has been released in the 3.0.6 (1.3) build. 

We have changed the message time to 5 seconds in build version 3.0.6