Yeah, that's probably best. We'll also almost always be displaying it, since most tournaments are 7 days, and when you add in the aftertour and return, it comes to 8, which is long enough that any unit will at least be complaining.
But if you are close by, you can join late.
I'd say we check for the autopay setting and pop up a warning if absence > autopay, and if no autopay is set, we pop up a warning if it's more than 8 or 9 days.