diff --git a/src/assets/icons/index.ts b/src/assets/icons/index.ts
index e1b5469..931132b 100644
--- a/src/assets/icons/index.ts
+++ b/src/assets/icons/index.ts
@@ -41,3 +41,4 @@ export { default as User } from './page/user.svg';
 export { default as Warning } from './page/warning.svg';
 export { default as Wellbeing } from './page/wellbeing.svg';
 export { default as Burger } from './page/burger.svg';
+export { default as FallbackImage } from './page/fallback_image.svg';
diff --git a/src/assets/icons/page/fallback_image.svg b/src/assets/icons/page/fallback_image.svg
new file mode 100644
index 0000000..79abecd
--- /dev/null
+++ b/src/assets/icons/page/fallback_image.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 640 640"><!--!Font Awesome Free 7.1.0 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free Copyright 2026 Fonticons, Inc.--><path d="M160 144C151.2 144 144 151.2 144 160L144 480C144 488.8 151.2 496 160 496L480 496C488.8 496 496 488.8 496 480L496 160C496 151.2 488.8 144 480 144L160 144zM96 160C96 124.7 124.7 96 160 96L480 96C515.3 96 544 124.7 544 160L544 480C544 515.3 515.3 544 480 544L160 544C124.7 544 96 515.3 96 480L96 160zM224 192C241.7 192 256 206.3 256 224C256 241.7 241.7 256 224 256C206.3 256 192 241.7 192 224C192 206.3 206.3 192 224 192zM360 264C368.5 264 376.4 268.5 380.7 275.8L460.7 411.8C465.1 419.2 465.1 428.4 460.8 435.9C456.5 443.4 448.6 448 440 448L200 448C191.1 448 182.8 443 178.7 435.1C174.6 427.2 175.2 417.6 180.3 410.3L236.3 330.3C240.8 323.9 248.1 320.1 256 320.1C263.9 320.1 271.2 323.9 275.7 330.3L292.9 354.9L339.4 275.9C343.7 268.6 351.6 264.1 360.1 264.1z"/></svg>
\ No newline at end of file
diff --git a/src/components/common/card/CardContainer.tsx b/src/components/common/card/CardContainer.tsx
index 161dfe7..d3d89f1 100644
--- a/src/components/common/card/CardContainer.tsx
+++ b/src/components/common/card/CardContainer.tsx
@@ -21,7 +21,7 @@ interface Props {
  */
 export default function CardContainer({ variant, children, className }: Props) {
   const baseLayout = {
-    grid: 'flex flex-col lg:w-65.5 shadow-[0_0_20px_rgba(0,0,0,0.08)] rounded-3xl overflow-hidden',
+    grid: 'flex flex-col w-full shadow-[0_0_20px_rgba(0,0,0,0.08)] rounded-3xl overflow-hidden',
     list: 'flex justify-between items-center bg-white rounded-3xl p-6 md:w-119 lg:w-160 shadow-[0_4px_24px_0_rgba(156,180,202,0.20)]',
     reservation: 'flex w-full flex-col lg:flex-row ',
   }[variant];
diff --git a/src/components/common/image-upload/ImageUpload.tsx b/src/components/common/image-upload/ImageUpload.tsx
index 1d3c96f..ef216e0 100644
--- a/src/components/common/image-upload/ImageUpload.tsx
+++ b/src/components/common/image-upload/ImageUpload.tsx
@@ -1,4 +1,4 @@
-import { Delete, PasswordHidden } from '@/assets/icons';
+import { Delete, FallbackImage } from '@/assets/icons';
 import { useEffect, useRef, useState } from 'react';
 import imageCompression from 'browser-image-compression';
 type ImageUploadProps = {
@@ -91,7 +91,7 @@ export default function ImageUpload({
           type='button'
           onClick={handleClick}
           className='flex h-20 w-20 flex-col items-center justify-center gap-0.5 rounded-md border border-gray-100 bg-white px-5 py-1.5 sm:h-32 sm:w-32 sm:gap-2.5 sm:rounded-2xl sm:py-4'>
-          <PasswordHidden className='h-10 w-10 px-[6.67px] pt-2.5 pb-[6.14px] text-gray-400' />
+          <FallbackImage className='h-10 w-10 px-[6.67px] pt-2.5 pb-[6.14px] text-gray-400' />
           <div className='font-sm-medium md:font-md-medium text-gray-600'>
             {fileCount}/{maxFiles}
           </div>
diff --git a/src/pages/ActivityDetail/ActivityReviews.tsx b/src/pages/ActivityDetail/ActivityReviews.tsx
index 2d14841..6edf73e 100644
--- a/src/pages/ActivityDetail/ActivityReviews.tsx
+++ b/src/pages/ActivityDetail/ActivityReviews.tsx
@@ -1,6 +1,7 @@
 import { useState } from 'react';
 import Title from '@/components/common/Title';
 import Pagination from '@/components/common/pagination';
+import RatingStar from '@/components/common/RatingStar';
 import { Star } from '@/assets/icons';
 import { useActivityReviews } from '@/hooks/queries/useActivityReviews';
 
@@ -106,14 +107,10 @@ export default function ActivityReviews({ activityId }: ActivityReviewsProps) {
                 <span className='font-md-bold text-gray-900'>{review.user.nickname}</span>
                 <span className='font-md-medium text-gray-500'>{formattedDate}</span>
               </div>
-              <div className='mb-2 flex items-center gap-1'>
-                {Array.from({ length: 5 }).map((_, i) => (
-                  <Star
-                    key={i}
-                    className={`h-4 w-4 ${i < Math.floor(review.rating) ? 'text-yellow-500' : 'text-gray-300'}`}
-                  />
-                ))}
-              </div>
+              <RatingStar
+                value={review.rating}
+                className='mb-2 gap-1 [&_button]:h-4 [&_svg]:h-4 [&_svg]:w-4'
+              />
               <p className='font-md-medium text-gray-800'>{review.content}</p>
             </div>
           );
diff --git a/src/pages/ActivityDetailPage.tsx b/src/pages/ActivityDetailPage.tsx
index 2a2577d..4abcb6e 100644
--- a/src/pages/ActivityDetailPage.tsx
+++ b/src/pages/ActivityDetailPage.tsx
@@ -298,7 +298,7 @@ function ActivityDetailPage() {
 
           {/* 우측 영역 - 예약 정보 (데스크톱) */}
           <aside className='hidden lg:block lg:w-[384px]'>
-            <div className='sticky top-6'>
+            <div className='sticky top-24'>
               {/* 상단 정보 영역 */}
               <ActivityInfo
                 category={activity.category}
diff --git a/src/pages/CreateActivityPage.tsx b/src/pages/CreateActivityPage.tsx
index 3cb3472..99f91b7 100644
--- a/src/pages/CreateActivityPage.tsx
+++ b/src/pages/CreateActivityPage.tsx
@@ -79,11 +79,19 @@ export default function CreateActivityPage() {
       //toISOString() 하면 "2026-01-02T00:00:00.000Z" 이런 문자열이 됨
       //split('T')[0] 하면 "2026-01-02"만 뽑음
       // 서버가 원하는 날짜 형식 완성
-      const schedules = values.rows.map((row) => ({
-        date: row.date.toISOString().split('T')[0],
-        startTime: row.startTime,
-        endTime: row.endTime,
-      }));
+      const schedules = values.rows.map((row) => {
+        const d = row.date;
+
+        const yyyy = d.getFullYear();
+        const mm = String(d.getMonth() + 1).padStart(2, '0');
+        const dd = String(d.getDate()).padStart(2, '0');
+
+        return {
+          date: `${yyyy}-${mm}-${dd}`,
+          startTime: row.startTime,
+          endTime: row.endTime,
+        };
+      });
 
       // 3) 최종 payload
       const payload: CreateActivityRequest = {