we will use LNDK along-side LND:

> While LND does not support BOLT 12 at this moment, you can run LNDK along-side your LND node to begin trying out BOLT 12.

-- https://bolt12.org/developers

edit: Oh sorry, I see you meant receivers that use LND won't support BOLT12

ah ok, but LND does not support bolt12 yet, probably after 0.19.0

af1f6f3e17

You can currently do that. It’s already supported and will continue to be

what about a backup receive option? in case the first option is unreachable at that moment for whatever reason.

BeeAye

Yep, you'll input a bolt12 like you would a lightning address or any of the other attachments.