diff --git a/waiting/serializers.py b/waiting/serializers.py
index a59de41..feb9754 100644
--- a/waiting/serializers.py
+++ b/waiting/serializers.py
@@ -3,6 +3,7 @@
 from booth.models import Booth
 from django.contrib.auth.models import User
 from django.utils import timezone
+from datetime import timedelta
 
 # 나의 대기에서 부스 정보 확인용 !! - 아래의 시리얼라이저에서 사용됨 !!
 class BoothSerializer(serializers.ModelSerializer):
@@ -27,12 +28,12 @@ class WaitingSerializer(serializers.ModelSerializer):
     username = serializers.CharField(source='user.username', read_only=True)
     registered_at = serializers.DateTimeField(read_only=True)
     waiting_teams_ahead = serializers.SerializerMethodField()  # 내 앞에 있는 팀 수를 위한 필드 추가
-    confirm_remaining_time = serializers.SerializerMethodField()  # 3분 타이머 추가
-    arrival_remaining_time = serializers.SerializerMethodField()  # 10분 타이머 추가
+    confirm_due_time = serializers.SerializerMethodField()  # 3분 더한 시간 반환
+    arrival_due_time = serializers.SerializerMethodField()  # 10분 더한 시간 반환
 
     class Meta:
         model = Waiting
-        fields = ['id', 'username', 'booth','party_size', 'waiting_status', 'registered_at', 'ready_to_confirm_at', 'confirmed_at', 'canceled_at', 'waiting_teams_ahead', 'confirm_remaining_time', 'arrival_remaining_time']
+        fields = ['id', 'username', 'booth','party_size', 'waiting_status', 'registered_at', 'ready_to_confirm_at', 'confirmed_at', 'canceled_at', 'waiting_teams_ahead', 'confirm_due_time', 'arrival_due_time']
 
     def get_waiting_teams_ahead(self, obj):
         return Waiting.objects.filter(
@@ -41,21 +42,17 @@ def get_waiting_teams_ahead(self, obj):
             waiting_status='waiting'
         ).count()
         
-    # 3분 타이머 필드
-    def get_confirm_remaining_time(self, obj):
-        if obj.waiting_status == 'ready_to_confirm' and obj.ready_to_confirm_at:
-            elapsed_time = (timezone.now() - obj.ready_to_confirm_at).total_seconds()
-            minutes, seconds = divmod(max(0, 180 - elapsed_time), 60)
-            return f'{int(minutes)}:{int(seconds)}'
-        return "00:00"
+    # 3분 더한 시간 반환
+    def get_confirm_due_time(self, obj):
+        if obj.ready_to_confirm_at:
+            return obj.ready_to_confirm_at + timedelta(minutes=3)
+        return None
 
-    # 10분 타이머 필드
-    def get_arrival_remaining_time(self, obj):
-        if obj.waiting_status == 'confirmed' and obj.confirmed_at:
-            elapsed_time = (timezone.now() - obj.confirmed_at).total_seconds()
-            minutes, seconds = divmod(max(0, 600 - elapsed_time), 60)
-            return f'{int(minutes)}:{int(seconds)}'
-        return "00:00"
+    # 10분 더한 시간 반환
+    def get_arrival_due_time(self, obj):
+        if obj.confirmed_at:
+            return obj.confirmed_at + timedelta(minutes=10)
+        return None
 
 # 나의 웨이팅 디테일
 class WaitingDetailSerializer(serializers.ModelSerializer):
@@ -63,12 +60,13 @@ class WaitingDetailSerializer(serializers.ModelSerializer):
     username = serializers.CharField(source='user.username', read_only=True)
     registered_at = serializers.DateTimeField(read_only=True)
     waiting_teams_ahead = serializers.SerializerMethodField()
-    confirm_remaining_time = serializers.SerializerMethodField()  # 3분 타이머 추가
-    arrival_remaining_time = serializers.SerializerMethodField()  # 10분 타이머 추가
+    total_waiting_teams = serializers.SerializerMethodField()
+    confirm_due_time = serializers.SerializerMethodField()  # 3분 더한 시간 반환
+    arrival_due_time = serializers.SerializerMethodField()  # 10분 더한 시간 반환
 
     class Meta:
         model = Waiting
-        fields = ['id', 'username', 'booth', 'party_size', 'waiting_status', 'registered_at', 'ready_to_confirm_at', 'confirmed_at', 'canceled_at', 'waiting_teams_ahead', 'confirm_remaining_time', 'arrival_remaining_time']
+        fields = ['id', 'username', 'booth', 'party_size', 'waiting_status', 'registered_at', 'ready_to_confirm_at', 'confirmed_at', 'canceled_at', 'waiting_teams_ahead', 'total_waiting_teams', 'confirm_due_time', 'arrival_due_time']
 
     def get_waiting_teams_ahead(self, obj):
         return Waiting.objects.filter(
@@ -76,22 +74,24 @@ def get_waiting_teams_ahead(self, obj):
             created_at__lt=obj.created_at,
             waiting_status='waiting'
         ).count()
+        
+    def get_total_waiting_teams(self, obj):
+        return Waiting.objects.filter(
+            booth=obj.booth,
+            waiting_status='waiting'
+        ).count()
 
-    # 3분 타이머 필드
-    def get_confirm_remaining_time(self, obj):
-        if obj.waiting_status == 'ready_to_confirm' and obj.ready_to_confirm_at:
-            elapsed_time = (timezone.now() - obj.ready_to_confirm_at).total_seconds()
-            minutes, seconds = divmod(max(0, 180 - elapsed_time), 60)
-            return f'{int(minutes)}:{int(seconds)}'
-        return "00:00"
+    # 3분 더한 시간 반환
+    def get_confirm_due_time(self, obj):
+        if obj.ready_to_confirm_at:
+            return obj.ready_to_confirm_at + timedelta(minutes=3)
+        return None
 
-    # 10분 타이머 필드
-    def get_arrival_remaining_time(self, obj):
-        if obj.waiting_status == 'confirmed' and obj.confirmed_at:
-            elapsed_time = (timezone.now() - obj.confirmed_at).total_seconds()
-            minutes, seconds = divmod(max(0, 600 - elapsed_time), 60)
-            return f'{int(minutes)}:{int(seconds)}'
-        return "00:00"
+    # 10분 더한 시간 반환
+    def get_arrival_due_time(self, obj):
+        if obj.confirmed_at:
+            return obj.confirmed_at + timedelta(minutes=10)
+        return None
 
 # 웨이팅 등록 관련 시리얼라이저
 class WaitingCreateSerializer(serializers.ModelSerializer):