When does the hotel charge your credit card. When you arrive or when you depart.

Arrive

Deposit upon arrival and the final bill upon departure.

Final bill is charged at checkout but usually a hold for incidentals at checkin

Yes plus a deposited charge for incidentals. Which can take a week or 2 to be credited back

So just like most places they will put a hold in your card for the amount your booked for and charge you when you check out