Comment by ncruces

Yeah, that conflicts with their rate limits, which I hope they'll revise under this scheme.

https://letsencrypt.org/docs/rate-limits/

For the “exact same set of hostnames” (aka. renewals) the rate limit is 5 certificates every 7 days.

So you could do it every other day, if you can make sure there's only one client doing it.

And they're very clear this is a global limit: creating multiple accounts doesn't subvert it.

So you'll need to manage this centrally, if you have multiple hosts sharing a hostname.