i would like to ask the guy at the hotel front desk what time i have to leave the room.
how can i say that?
can i say "what time do i have to vacate the room"?
what's the most usual way?
Yes, you can say "What time to I have to vacate the room?"
Most people say, "What time do we check in?" "What time must we check out?" or "What time is check-out?"