Is the Home/Away etc.. mode a UI7 thing?

I have a few scenes that are set to run only in vacation mode and they all seem to be active since I downgraded to UI5

Yes it is a UI7 feature not natively available in UI5

Crap, does that mean I have to delete all my scenes for anything other than the “all mode”?

Any way to bring back similar features? It’s my first day with UI5 and for sure it’s not as intuitive but heck it works better.

You could use the DD-WRT presence script to detect whether your smart phone is connected to your local Wifi (if you have an ***WRT capable router) and determine Home or Away mode that way. Using the multiswitch plugin to set the mode on one of it’s buttons. Same for Vacation mode, use a multi switch button to set that manually and use that button as a trigger for scripts. For night mode, use the luup.is_night function to again set a multiswitch button to be used as a trigger.

I believe there are geofencing plugins for Ui5 but I never really looked into that as the DD-WRT route worked for me just fine.