I've done it a month ago.The one difference for changing a same day ADR's date is that you need to call and cannot make the changes online. The call usually takes about 10 minutes. Remember to cancel that faux ADR the next day or so
We've done this twice, the last time was 18 months ago. Pretty sure it still works the same.
It's not that hard and fast. Sometimes it's 3 hours, sometimes it's not at all, sometimes it's less than that.Good to know there's likely a time window. I'm assuming 3hrs is for all ADRs?
iirc I tried before noon to change the date of a dinner ADR but the system said I needed to call. It felt like they intentionally made both of my calls longer and more inconvenient than necessary by repeating paragraphs of the same things over and over and over but maybe they always go through all that spiel, lol.