I stay often at the Durham Marriott in the UK. Points are always posted overnight after my check-out, unless it's a Fri/Sat check-out in which case it's the following Monday morning.

Is this an outlier ??

Most of my US stays (FS/CY) take at least 72 hours to post as do most of my other UK and European stays.

Is this life changing, well no .. but naming and shaming, I often put relatives up at the Worsley Park Marriott (Manchester UK) around Xmas and they never post until well into the New Year (after the roll-over calculation has been made), so every year I have to contact MR and ask them for the additional roll-over nights.