[ghaff]

Yep and they're presumably with guests. And it's not like all the guests head off to the Westworld Hilton after dinner every evening so that the park can do its daily cleanup.

[tyrbo]

I think it's more likely that they would cycle them out over time to reset.

Yes, the hosts are busy, but it's definitely possible they could be recalled to a location for pickup (or whatever) when they're free.