feat(operations): improve reservation and check-in flows

backend/checkins/serializers.py

@@ -18,6 +18,7 @@ class CheckInPreviewResponseSerializer(serializers.Serializer):
     reservation_id = serializers.IntegerField()
     performance_id = serializers.IntegerField()
     show_title = serializers.CharField()
+    venue_name = serializers.CharField()
     starts_at = serializers.DateTimeField()
     party_size = serializers.IntegerField()