How can you check who, if anybody, is within your inn? How long does it take for an inn to get its first occupancy? Does the inn always have an occupant, or can it be empty when an invite is not used?

Got ot your buildings and click on the inn.

It tells you who is there and for how long they will be staying.

And yes It can be empty at times, though people can come without an invitation too.

Does anyone know if you can use more than one invite at a time? (sorry if this has been asked before!)

you can use more than one at the time, but only one guest will come, the gues from second invite will come after the 1st one leaves.

Thanks for that info!

Um, I got income from a visitor at my inn, but when I clicked on it it didn't say who was there, only the building description.

Ohh, nevermind, it works if I click on the name, not the picture.

No, if you use two invites the second one will overwrite the first, you'll still only get one visitor in your queue. Before you waste your invites ^^