@Mike-And-Amy3 There was another recent thread about this. You can turn off "reminders" in your account profile, but a host who did this said they continued to receive them. But it's worth a try.
Also on some phones you can program in certain numbers that are allowed to come through during specific times, while blocking all the rest. If your phone has this option, you could program in numbers you'd want to receive texts or calls from at any hour, like family, in case of emergency, and any current guests you have, also in case of emergency. I can't really think of any other circumstances where it would be crucial to receive a call or text in the middle of the night.
A guest who sends an inquiry or booking request at what is sleep time for me and can't wait until a reasonable hour for a reply, is quite welcome to book elsewhere, as far as I'm concerned. 🙂