I mow every 2 weeks in the growing season and 4 in when it slows. Clients know what day I'm coming and all cars, dog #### etc is moved.
We sometimes get rain here and the odd public holiday. My mowing also revolves around my life and not my life around mowing. Just because I turned up Tuesday last time is no indication that ill turn up Tuesday next time.
Prime example is today. I'm going shooting and fishing this weekend (decided to go yesterday) so ill only be doing two jobs today so I can get away early this arvo, I'll catch up on the other 2 Tuesday or Wednesday.
What are the downfalls of texting the night before? Maybe the odd "it doesn't need mowin can you do it next week?"? If it doesn't need mowing then you saved yourself a trip. I don't buy milk when I don't need it, fair enough if they don't need their lawn mowed then they don't need their lawn mowed.