Updating this thread for visibility. Ended up finding this other thread that helped me tremendously. In a nutshell, I updated the Valid_If expression on the checkout date to this: AND( ([Checkout] >= [Checkin]), (COUNT( FILTER( "Reservations", OR( AN...

Thanks, KJ! Great feedback for UX sake I appreciate the help

Aha! Thank you very much, that’s exactly what I’m looking for I’ll update the thread with the expression I eventually create so that it can help others with the same issue

Hm that’s a good point with the infinite dataset, thanks! I’m okay with setting a limit for days that the user would be able to book in advance. Not sure if I’m thinking about this the right way, but would it be possible to use the Valid_If to invali...

Something like that would be ideal, but I figured that wouldn’t be possible. I’m thinking that if I use the Valid_If I can at least get something like this: