diff --git a/src/main/kotlin/com/android/trisolarisserver/controller/BookingFlow.kt b/src/main/kotlin/com/android/trisolarisserver/controller/BookingFlow.kt
index 36c4845..6ff9b9e 100644
--- a/src/main/kotlin/com/android/trisolarisserver/controller/BookingFlow.kt
+++ b/src/main/kotlin/com/android/trisolarisserver/controller/BookingFlow.kt
@@ -4,6 +4,7 @@ import com.android.trisolarisserver.component.PropertyAccess
 import com.android.trisolarisserver.component.RoomBoardEvents
 import com.android.trisolarisserver.controller.dto.BookingCancelRequest
 import com.android.trisolarisserver.controller.dto.BookingCheckInRequest
+import com.android.trisolarisserver.controller.dto.BookingBulkCheckInRequest
 import com.android.trisolarisserver.controller.dto.BookingCheckOutRequest
 import com.android.trisolarisserver.controller.dto.BookingCreateRequest
 import com.android.trisolarisserver.controller.dto.BookingCreateResponse
@@ -267,6 +268,93 @@ class BookingFlow(
         roomBoardEvents.emit(propertyId)
     }
 
+    @PostMapping("/{bookingId}/check-in/bulk")
+    @ResponseStatus(HttpStatus.CREATED)
+    @Transactional
+    fun bulkCheckIn(
+        @PathVariable propertyId: UUID,
+        @PathVariable bookingId: UUID,
+        @AuthenticationPrincipal principal: MyPrincipal?,
+        @RequestBody request: BookingBulkCheckInRequest
+    ) {
+        val actor = requireActor(propertyId, principal)
+        if (request.stays.isEmpty()) {
+            throw ResponseStatusException(HttpStatus.BAD_REQUEST, "stays required")
+        }
+
+        val booking = requireBooking(propertyId, bookingId)
+        if (booking.status != BookingStatus.OPEN) {
+            throw ResponseStatusException(HttpStatus.CONFLICT, "Booking not open")
+        }
+
+        val roomIds = request.stays.map { it.roomId }
+        if (roomIds.distinct().size != roomIds.size) {
+            throw ResponseStatusException(HttpStatus.BAD_REQUEST, "Duplicate roomId in stays")
+        }
+
+        val rooms = request.stays.associate { stay ->
+            val room = roomRepo.findByIdAndPropertyId(stay.roomId, propertyId)
+                ?: throw ResponseStatusException(HttpStatus.NOT_FOUND, "Room not found")
+            if (!room.active || room.maintenance) {
+                throw ResponseStatusException(HttpStatus.CONFLICT, "Room not available")
+            }
+            stay.roomId to room
+        }
+
+        val occupied = roomStayRepo.findActiveRoomIds(propertyId, roomIds)
+        if (occupied.isNotEmpty()) {
+            throw ResponseStatusException(HttpStatus.CONFLICT, "Room already occupied")
+        }
+
+        val now = OffsetDateTime.now()
+        val checkInTimes = mutableListOf<OffsetDateTime>()
+        val checkOutTimes = mutableListOf<OffsetDateTime>()
+        request.stays.forEach { stay ->
+            val checkInAt = parseOffset(stay.checkInAt) ?: now
+            checkInTimes.add(checkInAt)
+            val checkOutAt = parseOffset(stay.checkOutAt)
+            if (checkOutAt != null) {
+                if (!checkOutAt.isAfter(checkInAt)) {
+                    throw ResponseStatusException(HttpStatus.BAD_REQUEST, "Invalid date range for stay")
+                }
+                checkOutTimes.add(checkOutAt)
+            }
+            val room = rooms.getValue(stay.roomId)
+            val newStay = RoomStay(
+                property = booking.property,
+                booking = booking,
+                room = room,
+                fromAt = checkInAt,
+                toAt = null,
+                rateSource = parseRateSource(stay.rateSource),
+                nightlyRate = stay.nightlyRate,
+                ratePlanCode = stay.ratePlanCode,
+                currency = stay.currency ?: booking.property.currency,
+                createdBy = actor
+            )
+            roomStayRepo.save(newStay)
+        }
+
+        val bookingCheckInAt = checkInTimes.minOrNull() ?: now
+        val bookingExpectedCheckout = checkOutTimes.maxOrNull()
+        booking.status = BookingStatus.CHECKED_IN
+        booking.checkinAt = bookingCheckInAt
+        if (bookingExpectedCheckout != null) {
+            booking.expectedCheckoutAt = bookingExpectedCheckout
+        }
+        booking.transportMode = request.transportMode?.let {
+            val mode = parseTransportMode(it)
+            if (!isTransportModeAllowed(booking.property, mode)) {
+                throw ResponseStatusException(HttpStatus.BAD_REQUEST, "Transport mode disabled")
+            }
+            mode
+        }
+        if (request.notes != null) booking.notes = request.notes
+        booking.updatedAt = now
+        bookingRepo.save(booking)
+        roomBoardEvents.emit(propertyId)
+    }
+
     @PostMapping("/{bookingId}/check-out")
     @ResponseStatus(HttpStatus.NO_CONTENT)
     @Transactional
diff --git a/src/main/kotlin/com/android/trisolarisserver/controller/dto/BookingDtos.kt b/src/main/kotlin/com/android/trisolarisserver/controller/dto/BookingDtos.kt
index 697cbac..499ff26 100644
--- a/src/main/kotlin/com/android/trisolarisserver/controller/dto/BookingDtos.kt
+++ b/src/main/kotlin/com/android/trisolarisserver/controller/dto/BookingDtos.kt
@@ -13,6 +13,22 @@ data class BookingCheckInRequest(
     val notes: String? = null
 )
 
+data class BookingCheckInStayRequest(
+    val roomId: UUID,
+    val checkInAt: String? = null,
+    val checkOutAt: String? = null,
+    val nightlyRate: Long? = null,
+    val rateSource: String? = null,
+    val ratePlanCode: String? = null,
+    val currency: String? = null
+)
+
+data class BookingBulkCheckInRequest(
+    val stays: List<BookingCheckInStayRequest>,
+    val transportMode: String? = null,
+    val notes: String? = null
+)
+
 data class BookingCreateRequest(
     val source: String? = null,
     val expectedCheckInAt: String,