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no vacancy; full occupancy
申し訳もうしわけありませんが満室まんしつです。
I'm sorry, but we are fully booked.
週末しゅうまつは満室まんしつになることが多いおおい。
It is often fully booked on weekends.
満室まんしつのため予約よやくできなかった。
I couldn't make a reservation because it was fully booked.