How to get door codes out to guests who book during the night

[Luis-and-Normajean0]

Hello everyone! 

Typically when a guest books I set their scheduled message with their door code that goes out a day before they arrive. Lately, I have been having people book during the night, while I am asleep, and they are wanting to check in right away or they book for example at 11 pm and want the code to check in, since technically "check in" would of been at 3 pm. Because of this, I do not have a code set up for them and don't know if there is a way to set another scheduled message or something when this happens. I was wondering how everyone else handles these situations? How do you all send out your codes? 

Thanks in advance!